@DicklessWonder
You need to factor others are no longer thinking about covid when you decide wether to go somewhere or not.
I work with vulnerable cancer patients. I consider I have a responsibility to minimise risk to them, and you think I should do that by not going anywhere? I’m double vaxxed and boosted - lots of them aren’t.
Fear of Covid isn’t irrational. I’ve been without a colleague for over a year due to long Covid. Her return isn’t certain because of the neurological damage she’s sustained affecting her ability to walk. But sure, it’s just a cold. 
Being perhaps too blunt, if you work with them and have a responsibility of care, you should be advising them correctly.
Grumbling about other people’s behaviour is a long term strategy that just might pay off and protect the entire population. It’s naive to think that it will do anything but make you feel better in the short term.
And in that short term, it leaves your patients unprotected. Bearing in mind we presently have very high infection numbers, that’s a bad thing.
If you really care to give them accurate, actionable advice, then no, going nowhere is too simple. But when they do go, if they are immunologically compromised, then mask up (FFP3, nothing less), stay in crowded areas for short periods only and distance where possible. It’s not rocket science.
To your point about it not being irrational, you’re right. It’s not. But with a caring responsibility, you do need to rationalise it and translate it into something that is useful. If you let fear dominate, you’ll miss then steps that you can (and should) advise that they take when inevitably they are forced into an environment they haven’t anticipated.