The facts haven't (yet) changed on a long-term basis, we can only speculate on whether or not the virus will be beaten.
We can speculate about future things (will Coronavirus be something we can all bounce back from), but there are plenty of non-Covid things that we can judge our previous predictions against - e.g. when it comes to bi-modes, I was more in favour of sticking an engine under an existing train that had no future on its current line (like the 319s displaced by Thameslink or the D-stock that was replaced on the London Underground). That felt more environmentally friendly than building brand new stock.
However, evidence seems to show that Hitachi can churn out large numbers of brand new bi-modes in the time that Porterbrook/ VivaRail can teach an old train new tricks.
Similarly, Wabtec seem to take as long to fit a new (accessible) door to a 1970s HST as Hitachi do to build an entire (accessible) train.
So I'm in the "build new" camp nowadays, rather than trying the previously attractive approach of patching up old trains and trying to get them to be fit for the future - it's generally too much hassle. Something I've changed my mind about - some stuff sounds good on paper but when you see how complicated/ expensive/ unreliable/ delayed it is in practice, you change your mind (I'm annoyed that electrification schemes are going to be harder and harder to justify in future, given the problems on the GWML etc).
I haven't changed my views about anything regarding rail in particular or public transport in general. Particularly the WFH situation has revealed some very strange attitudes to work. If working from home is desirable now, why was it not before? I cannot imagine anything than a return to at least 2=3 days per week 'at the office' after COVID 19 is over. Human beings have to mingle as a survival necessity. As a colony species they can't avoid it.
I can't speak for others, but there was a gradual trend over the past decade, but it was limited to those over a certain pay grade - many offices were "manager-less" on Fridays as the boss was entitled to work from home whilst their staff were expected to be in the office.
You might have wanted to work more flexibly but it'd have been hard to get permission.
The past six months have forced employers' hands and shown us that many people can do the majority of their jobs at home. Maybe this would have happened in the longer term (it was always being used as an excuse not to build HS2), but it might have taken a decade or more to happen.
We can’t just let public transport go to ruin.
Not everyone can drive, Not everyone wants to drive, Not everyone wants to sit in traffic, Not everyone wants to contribute to climate change.
The uproar from environmentalists over a mothballed passenger rail network would be immense. They will be crying over their defeat as they watch a jam packed parliament square fill up with distressed commuters, all trying to get to the same place at the same time.
Youth unemployment will also skyrocket with no passenger railway as they have fewer ways of getting around, and not everybody can and/or wants to drive.
A much better move would be to move the entire network to a Sunday timetable, with frequencies in many cases halved but most connections maintained.
WE NEED TO SAVE THE RAILWAYS NOW, and I’m happy to pay more tax for it.
Not everyone can drive, sure, but 90-95% of the population seem to manage their lives without using the railway on a regular basis.
Whilst I appreciate the point that you're making, if you play the "climate change" card then you have to consider how much pollution you're going to get from a lightly loaded DMU chugging along at a couple of miles to the gallon - if trains are going to be lower than 50% capacity on average then they are part of the environmental problem rather than part of the environmental solution.