In fact, I don't see anything wrong with preventing such situations from happening before they actually come around since everything happens for the first time one day. Basically, it is just a matter of time.
It has never happened, and in expectancy of it happening once we should do this? Seems to be the opposite of normalcy bias.
Let's cut the crap here
You may twist the facts as much as you want with your buddy minifrij but you were a moderator (by whatever name), and you were kicked for doing something which a moderator is not allowed to do (and what many mods still do at every other forum out there). I don't know the details of that story since I'm not very much interested in such stories in general (maybe, you had some reason behind your actions after all, I don't know). But personally, to me, blackmailing someone (as it was rumored) is a lot heavier "crime" than just stealthily deleting posts of some user which you may not quite like (heck, that might be a real crime that could put you in a real jail). So please don't tell me about "the opposite of normalcy bias", I'm not that kind of person (I don't know what you meant to say anyway)