There’s not an abbreviation for this in the community rules.

It isn’t power tripping fully because the decision was made based on more than a single factor, and they are indeed reasonable rules.

But it is a tad much for a permaban on the first go on your instance. While I agree there are some people that do not give a fuck and stir shit everywhere they go, and I agree that it seems you were dealing with one, a temp ban is the go-to.

Since you can’t/won’t share private communications (and good on you for that), we can only go with what’s available, and a permaban is too far based on only that for a first offense.

If their responses in private were bad enough, that’s a judgement call, and it might change the matter. Since you don’t have a history of wielding the hammer heavily, despite having every right to do so on own instance, I give you the benefit of the doubt as well. A single action does not a power tripper make. It’s about patterns of behavior.

So, the specific action was low grade power tripping, but you aren’t a power tripper.

Now regardless of that, I fully support preemptive bans as a valid tool. Someone has a history of abuse on other instances and communities, and starts the same behavior on another one, it is a valid option. It is, however not an opinion that is held by a majority, and I tend to give my opinion about that less weight here lately. I accept that a lot of people consider that a power trip most of the time. But I think preventing a pattern from forming in the first place is a good thing when done with care.