Were they not? How come I have known since the lockdown pretty much exactly what I'm allowed to do?
I didn't think so, you (and me) probably understood as we were paying attention.
The "rules" came out in dribs and drabs; weren't we all supposed to receive a copy? - never saw one. As mentioned, most of those telling us what to do were, or came across as, skeptical themselves. We had Stanley Johnson and that Wetherspoon's bloke telling us they were rubbish.
Lot's of TV ads - but most people are conditioned to routinely ignore those. What was the message about policing and penalties? In the end we were told to use our common sense. To do that you need to understand the rationale behind various restrictions. And, unfortunately, most of the rationale boils down to "having to draw a line somewhere" and "what if everyone did that?".
From the common sense pov there wasn't much wrong with what Calderwood did, except that it was her.
If you like you can watch the last week or so of the Jeremy Vine Ch 5 show - they spend about an hour every morning trying to work out what they are and are not allowed to do.