> Indeed. I see this incomprehensible "You are posting too fast"
Email the mods and ask them to turn it off.
I don't know how they make that decision. I guess if they've had to give someone many warnings about flamewar behaviour they may not want to turn it off. But I'm not a mod and I don't know how it works.
I don't know either, but I started seeing it after making a bunch of polite comments that challenged a popular political belief. They got a lot of downvotes, but they got a lot of upvotes too. I hope it was an algorithmic error (assuming that the goal of the algorithm isn't too punish polite but controversial conversation) and not petty moderation.