Not like I support the right-wing politicians on Twitter but it'd be a denial of reality to think Twitter (as a website/app) doesn't skew towards left-wing politics
Considering it was the primary platform for at least one major right-wing harassment campaign, which Twitter did very little about, and considering the large gender critical presence that's still happily on it . . . well. I'm not making this about the groups mentioned, I'm just demonstrating the right-of-centre presence that goes back
years. All I'm saying is that your claims don't stack up.
I'd say they don't hold up to the evidence but . . . we don't even have any to discuss. Heck, Musk himself seems pretty firmly conservative. Economically at the very least.
Twitter can be, and often is, a cesspool. But there's no overarching political bias to the left. If anything, it's a perfect demonstration of capitalism as policy. The users are the data, the data is its (monetary) evaluation, and most of the things it implements are in service of increasing the value of that data. Which is why high-follower accounts are generally immune to permanent censure even as low-follower accounts are banned for pretty innocuous but technically-rulebreaking Tweets.