Accounts under a year old shouldn't be able to access Autistic Thunderdome. If we've already tried that and it didn't work, use a combination of minimum account age and minimum number of posts.
There's a subset of newfags who exclusively post in that subforum, and they're completely allergic to integrating. They just want a space to sperg about politics where they're allowed to say "nigger," and they don't give a crap about the site's actual purpose or culture. I don't fault them for wanting a totally rules-free place for political sperging, but that's just not what KF is for. People like that are the reason why the Stonetoss thread is a dumpster fire-- they don't like exposure being given to cows on their side of the fence politically.
If your perspective on whether or not someone is a cow is based on how much you disagree with their political stance, you've missed the point of cows. Sure, certain fringe political movements tend to attract cows, like MGTOW or transgenderism, but you can find them basically anywhere. Sometimes you share views or interests with them-- it's statistically inevitable. That doesn't mean you should derail the discussion with sperging on whether the person is a cow, especially if the thread made it out of proving grounds.