Locking ads might be the way to go but this relies on board admin having the time and want to have to stay on top that. So there's that? @Arkandel - thoughts?
I personally don't mind active criticism of games even when its not constructive because unless its so blatant that everyone can recognize something as someone just doing a shitty thing out of spite or other bad intent - people confuse constructive pushback as 'I don't like this thing' with 'these people should die painfully' or other attacks when they're not.
That said, I advocate for moving things to places on the board that are more receptive to 'these people should die painfully' because in this hobby, there are enough poorly socialized people who are behavior blind and do that very thing which impacts the rest of us.
What I don't want is toxic postivity policing. That's a huge issue in this hobby in general, where if you can't say anything nice maybe you should quit the game and maybe the planet. And inevitability, instead of letting people have complicated feelings about a game they're trying to play on - they suggest that they just leave the game as a dismissive, condescending answer. That's bullshit and helps no one.
I like to think we're intelligent enough to take negative feedback (constructive or otherwise) with a savvy grain of salt. If you're being automatically bamboozled by every slightly irritated thing people have to say about games, you have perhaps a different kind of problem?