I think 1-3 are fine (since nothing really happens without a human involved), but 4 should come in after several months of testing the model to make sure its false positive rate is as close to 0 as possible.
I in general think that LLM/"AI" stuff is massively overblown when used for creating content, but when analyzing stuff, it's much more reasonable to employ as a referral to humans to make the final decision.
I guess I've just been lucky in that I've not gotten any spam yet on masto...
My muscle memory is to hit power-right-ok to open youtube when I turn the tv on, most of the time without looking at it. The other day, it ended up still sitting on the default menu item after I did that. This must have popped up then. Something that can be dismissed without ever actually seeing it is certainly not enforceable.