Would you feel the same if Twitter were purchased by Rupert Murdoch and Twitter hid tweets that Fox considered not true?
Remember that it's only a matter of time until ownership changes or another larger platform gains traction, perhaps even one owned by a foreign government with significantly different ideas of what is "true", IE TikTok.
His feed has been getting worse recently, and the publicity of his misbehavior has been escalating. Maybe he's acting out more because it's an election year. Bit of a chicken/egg issue that I wouldn't want to get stuck defending either side.
But the fact of the matter is that the Citizens United ruling grants private corporations the right to free speech. He can continue to use Twitter, but they've literally got the right to campaign against him, editorialize, shadowban, or straight up ban him. He could choose to follow the site's rules, or run off to Gab. But he's doing it for attention and his tantrums and Twitter's non-enforcement actions are getting him a lot of that.
Citizens united foes not grant private corporations anything. Their freedom to say what they like was determined to already have existed. Citizens united just stops lower courts from enforcing any law that violates this freedom.
