Because we don't get back to normal by wishing it to be the case. Deaths are low but they're doubling every couple of weeks and will almost certainly hit 100 per day in the next week or so. Of course that trend will stop at some point but no one really knows when. We can't just wish these realities away by arbitrarily declaring 'freedom day'. We can hardly 'get on with life with covid in the background' when hospitals are cancelling operations and reconfiguring ICUs for the increasing numbers of Covid patients.
The paradox is that getting back to normal now depends on people acting as if it might not. The more cautious we are now, the sooner the exit wave will dissipate and the earlier things will get back to normal.
At this stage we really need to know whether these people died “with” or “from” Covid. I’ve always maintained that this is an important distinction but it is now more so than ever. With an average of 1.5k deaths everyday in the UK the number of people dying “with” Covid is inevitably going to increase as we enter the endemic stage.