I think you’ve noticed already, but I’m easy to trigger and I’ve got a bad personality, and I’ve been suspended a couple of times throughout the years (from the forum, that is). But I prefer to think I’m not permabanned because they recognize I manage to help out sometimes at least.
Technically speaking, Blizzard picks out people on their own with no requirement necessary other than you being viewed as helpful and valuable to them.
But for example, to get the veteran rank or w/e it’s called, on this forum, you need to have never been suspended while also being active on the forum iirc.
And I suspect they have tougher requirements to become a helper, but they haven’t really shared the specifics.
Anyway, as long as I’m not permabanned from the forum, then I’m happy with the way things are.
You can check the requirements there, it seems like. (Not the requirements for MVP, that’s still up to Blizzard’s own whims.)