My concern from the beginning was that people adopted their own much more strict versions of the law, scarily, including several police forces.
Fair enough if that made sense to individualsa as long as they didn't try to impose their versions on everyone else (though not those whose job is upholding it, there's no excuse for that), but it seemed to me that people had an idea of what we must do from film and TV and adopted that. Often people doing totally lawful activities were told it wasn't in the spirit....
Eventually it was like a whole mountain of spaghetti but initially it wasn't hard to find the relevant legislation and read for ourselves. There were even human rights lawyers explaining and discussing it on twitter and in podcasts.
For example, Boris Johnson's announcement with great fanfare that we could meet one other person for exercise had me scratching my head. It was there all time.
Michael Gove's assertion that we could go out for an hour of exercise also had no basis in reality. I tried to help on MN by explaining this. I thought it would help people's mental health where getting outside into nature was their coping mechanism, but people didn't seem to want to know.
It was distressing to see that people felt they had to explain themselves and constantly caveat everything lest someone advise them of breaking rules. "While I was out for my daily exercise" was a very common one. "I saw my mum (she's in our bubble)" another, once that was allowed.
Dementors were not people that followed rules. They were people that wanted to enforce their version of, on everyone else. They posted things like "You can't take children in supermarkets. Sorry" or posted photos of a a huge stretch of beach, shaming the "covidiot" who had gone for a walk.