The use of a platform is how they get money. The usage contributes to stats, clicks, throughput they then show those numbers to advertisers - to get money. So the content doesn't matter. The use does.
You post to Twitter, you help Musk. Simple as that unfortunately. That's part of why Capitalism is insidious, you're constantly aiding a ruling class who do not share your class interests. The least we can do is boycott the worst of them.