You are mixing up scientific advice with what is legally mandated.
Just because masks and some degree of social distancing is no longer required in England to the same degree by law (there were of course always legal loopholes), that doesn't mean that they aren't a precaution that could save lives. There is good scientific evidence for both of them.
Chris Whitty has said that he will personally continue to wear a mask in some circumstances. JVT admires the 3 Cs approach of the East.
For example, quoting the Evening Standard last month, below
Prof Whitty, England’s chief medical officer, said: “I don’t think we should underestimate the fact that we could get into trouble again surprisingly fast.”
Speaking at a webinar hosted by the Science Museum, Prof Whitty said: “We are not by any means out of the woods yet on this, we are in much better shape due to the vaccine programme, and drugs and a variety of other things.
“But this has got a long way to run in the UK, and it’s got even further to run globally.”
His comments came after Mr Johnson urged people not to “throw caution to the winds” .... and acknowledged there would be more hospital admissions and deaths from Covid-19 to come during “difficult days and weeks ahead”.
Prof Whitty said the key ...was “to take things incredibly slowly”, adding that he fully expected most people to continue to take precautions.
So, people who are being careful are following the advice from the government and its scientific advisors.
And no one is blaming children for anything.