I'm not on X, so I don't know, but IME on every other place on the internet since forever is that the loudest, dumbest users ARE the advertisers.
An environment that monetarily rewards users pushing their message into other peoples faces performs an environmental selection to make the advertisers the loudest and dumbest users.
Is it? Last time I heard about it advertisers were going away because Musk is focusing on what loudest users want (being able to speak loudly) and not what advertisers want (moderation)
Hence getting banned in Brazil. I guarantee that is not an outcome any advertiser wanted.
The secret, always is - follow new people in small increments and generously unfollow at the slightest annoyance. There are still lots of interesting people to find!
You'll discover there's people on both sides of political issues who can make their points and not be annoying about it but these are maybe 1-3% of political people. You can also completely ignore politics by being judicious with your unfollows.