You're the third person to point out that it's technically not brigading. I think that's splitting hairs, because it's happening by design, but I hear you. I don't know the right present participle, but it seems like a moot point.
To everything you wrote after that, I wholly agree. I don't think this really is about politics, though, so much as it's about unpopular perspectives held by minority groups. IMHO the platform should encourage a diversity of thought.
Yes, I could create a defederated instance, or I could just go hang out on Gab or TruthSocial. I was hoping I'd find a more well-rounded community here, like I had on reddit. It's worth noting that reddit is strongly left-leaning, but has a bunch of conservative communities that thrive due to its configuration. But again, this isn't just about politics — it's about minority groups.