Perhaps so, but it is very hard to look at this graph and say anything other than China is the main issue here
except perhaps to point out that the UK has *already* achieved quite a lot over the last 30 years or so in cutting emissions.
The reason (at least in part) is that there's a lot of people in India and China (both about 1.4bn), other reasonable reasons is that China produces a LOT of stuff for us. Therefore how much of those emissions are effectively outsourced emissions?
Yes, I know

and clearly we couldn't cope with the ecosystem of Venus even though the planet itself would survive, that wasn't my point. But we've had far greater concentrations of CO2 in the past history of the planet, that may have resulted en somewhat of a different ecosystem but I'm not sure why we couldn't adapt if necessary.
Humans did originally evolve in rather warmer conditions than 90-odd% of us are now used to. While I personally am very uncomfortable with heat, we can certainly *cope* with it.
The issue isn't necessarily heat, rather extremes of weather, for some that will be great, for others that'll be unseasonal wet or dry or cool. Whilst for individuals that's fine, what about it food stuff, which typically needs reliable weather?
If we find that we have prolonged wet periods during the late summer/early autumn then we're going to struggle to harvest grain.
If we find that we have very heavy rainfall when crops are seedlings, they are likely to get damaged/washed away.
But from the graph about you can see the UK has already been doing that. It doesn't seem to have helped the situation in India or China very much.
A lot of what we've been doing in the first half of that 40 year period was swapping from coal to gas, given that gas isn't always that easy to transport (compared to coal, especially if there's not the pipe network) that's not always going to be an easy thing to encourage others to do.
Interestingly power generation would have been broadly flat since the first quarter of pay year if there hadn't been a drought meaning that hydro power was down by quite a bit.
Outside of our very obvious and successful move to nuclear and renewables I do wonder if much of that achievement is to do with our getting out of 'the general business of making stuff'.
Probably in part, although by doing the above is meant we're down at near zero ciao use for power generation.
Would you be a member by any chance of the infamous Club of Rome?
I have faith in God we'll make largely good choices, even if we stumble along the way. Having just one child as the Club of Rome advocated, for instance, is doomsaying writ large. Even Marxist China has reversed that ill-advised policy.
Mankind has shown a wonderful ability to pull people out of poverty over the years. This continues.
I am proud in Australia to own thermal coal shares as it powers the world, and contributes to the raising of material living standards in nations as varied as mainland China, Germany, Indonesia, Japan, Philippines, South Korea, Taiwan and many others too numerous to mention.
The mainland Chinese and India may have disparate political systems (and no, I don't support Marxism) but each continues to rely heavily on thermal coal. They are building many new efficient HELE power stations. Good on them!
An Indian villager may correctly regard electrification as a huge advance for his or her community as it facilitates entrepreneurship.
Are you saying these people (many of whom I briefly observed during rail travel in India in 2019) ought be denied the creature comforts that you and I take for granted?
The climate has always changed naturally and will continue to do so.
Why should the West hobble itself with higher energy prices via so-called 'renewables' that are useless on still hot nights in my nation? Only small-scale nuclear, thermal coal and natural gas-fired power stations work in such conditions. The West has a vital role to play in assisting those less fortunate to progress, just as we've done since the Industrial Revolution.
The amount of still hot nights is fairly limited (and currently tend to be when we're not using the highest amounts energy), however there are other options.
For example tidal, battery storage, pumped storage, and the like.
Also the cost of wind and solar is quite a lot cheaper than other methods of generation (according to here
https://www.carbonbrief.org/analysi...offshore-wind-is-four-times-cheaper-than-gas/ half the cost of nuclear), which means that it's viable to store energy when it's cheap (high production, low demand) and sell it back when it's more expensive (high demand, low production).
Gas is currently quite expensive, with the above link citing costs of 9 times that of the renewables.
Even if we had to have gas for those hot still nights, there's nothing stopping us running renewables for all our energy use for (say) the other 85% of power generation that we need and only turning the gas power stations on as we need them.
Even if that costs us more money for each unit of gas used. Based on the above link:
Renewables £50
Nuclear £110
Gas £445
If the mix was 20% nuclear, 10% gas (but being switched on and off as we need it, so double the above rate) and 70% renewables the average cost would be £146.
Now whilst that's more than if it was 100% nuclear (£110), if we could manage to use those other options, at a cost of 4 times that of the renewables for that 10% the c/average cost would be £77, even at 8 times the cost it would still average out at £97.
I think you and I may possibly have different ideas of what I might be referring to as scaremongering. I'm mostly referring to the "we need to stop eating meat NOW"/"we need to close EVERY coal mine NOW"/"introduce a one/two child policy NOW"-type comments that are written in black and white. (By which I'm not denying that those policies would help, but that the benefits from introducing them gradually outweigh the combined benefits and harm from rushing them through in three seconds flat without thinking through the logistical consequences.)
Indeed, however many should have been implemented over the last 40 years, the longer we leave it the greater the need to do more extreme things more quickly.
Interestingly one way to reduce the number of children isn't necessary to bring in rules about what people can or can't do, but rather bring about better education for girls and women (mostly for those areas were education levels are poor). It's unlikely that there would be much in the way of unintended consequence in bringing in better education, so we could rush that in.