Specifically with masks, LFT tests etc, I think the argument is pretty simple.
The NHS is on the brink, we are in November, the worst of this year’s crises - by all accounts far worse than anything in the NHS’ history, will be in January - February. Even a small rise in cases could be disastrous.
It’s a careful line of course. You could say, for example, that people who are overweight should lose weight because their condition is likely (as is well proven) to cause significant strain on the NHS. You could say that smokers are far more likely to suffer sever syptoms and/or medical conditions and therefore should be forced to stop - but obviously we don’t want those things, there’s still needs to be an amount of personal choice even where that puts a strain on society.
But we are still in a pandemic, and that warrants special measures that are not usually in place, in order to protect society. Another lockdown - which really is not off the cards at all - will hurt businesses and affect all of our basic freedoms. For that reason, small sacrifices now like mandatory mask wearing is staving off bigger potential problems over winter. I do think vaccination has become over stigmatised and over focussed on, but on the other hand something has to be done or we may end up with a non-functional healthcare system by mid feb (we already may almost have one).
If we had a well funded healthcare system, a low hospitalisation rate, lots of beds, doctors, nurses and an NHS saying ‘sure, bring this on we can cope’, I’d feel very differently, but lets face it that is not the reality we are in right now. If you or me or someone we love gets cancer before the end of the year, and they aren’t able to get basic surgery because all the beds and surgeries are full then we’d probably feel far more strongly about forcing such measures.
Ultimately not everyone can have a choice. Lots of people choosing to not care about covid means other people will probably die unnecessarily when they certainly didn’t choose to. We are still in crises, in a global pandemic, and therefore for a limited time it’s perfectly justifiable to limit some people’s choices in order to preserve life and keep society working.