Everyone who obeyed this unquestioningly and was awful to other people should be very ashamed of themselves
In contrast to others, I do agree with you here. As I understand it, you're not suggesting that people should have wantonly flouted the rules - but that they should have shown humanity and common sense within them.
Did it really help the national fight against covid to bully an old man needing a few minutes' rest on his own on a bench, with all of his shopping? Normally, we give special consideration to the elderly and disabled whose lives are tougher than those of the young and healthy - but in this instance, covid was exploited as carte blanche to deliberately discriminate against and bully a vulnerable person, for no real purpose whatsoever.
Much earlier on in this thread, somebody referred to the police as being 'the bad guys' and somebody else really objected to this. Whilst the vast majority of police were genuinely trying to maintain order and safety, follow the rules and stop wanton idiots, there were undoubtedly some (as there are as well in non-covid times) who were really loving the power and grasping any opportunity to pointlessly upset and threaten people doing nothing dangerous at all.
There were loads of non-police trying to do exactly the same, but they (to their own deep disgust) didn't have the authority to force people to comply with their own - often far-fetched and ridiculous - interpretations of the rules, if they answered back.