Flagging isn’t the worst that can happen, you could also be rate limited what prevents you from answering in a discussion because of „you are posting too fast“

I know what I‘m talking about

Yes, when accounts have a pattern of posting too many unsubstantive and/or flamewar comments, we sometimes rate limit them.

We're happy to take the rate limit off once the account has built up a track record of using HN as intended.