@VulvaPerson
Questioning any aspect of this gets you written off as a conspiracy theorist or 'covid denier' really. Its a little silly, and quite sad.
Yes, covid deniers exist (and are annoying as fuck to deal with, the outright deniers/5g people), but someone questioning the effectiveness of a mask, or pointing out the dodgy timing of Boris' 'new strain' thing..are not covid deniers in my view, not at all.
Questioning is fine and in fact is very healthy: its how you question and what you posit as the alternative, which is what matters.
You see people taking the approach that goes like this: the government is not competent and has lied before -- ergo anything they say must be lies and the logical explanation is a conspiracy theory.
There's a line of thought that says that the way to solve distrust in the government and anxiety about its policies is to swing to the conclusion that they must be engaged in a giant cover-up of something far more sinister.
You see quite a lot of people who stop short of being full on conspiracy theorists but who always assume that everything the government or SAGE says is an out and out lie. This is actually just as dangerous and unhelpful as assuming that everything they say is true.
This is where the point about critical thinking comes in. People who either just accept everything the government says at face value and people who assume its all dangerous lies which are to be ignored are both lacking in the ability to weigh up the credibility of various sources of information.
The solution to that isn't blind faith in the government but nor is it blind cynicism which assumes that they are deliberately trying to mislead us.
If you assume that everything Boris tells us is a lie and everything SAGE predicts is wrong you are likely to be exposing yourself and those around you to unnecessary risk. Government guidance may not be infallible but its been through many many layers of review by highly qualified people. So on balance, government guidance is likely to be the safest approach. So by all mean question it but if you write it off immediately as unworthy of consideration you are not taking sensible steps to protect yourself and others. And that is irresponsible.