Twitter can do whatever Twitter wants. If you don’t want Twitter to censor your information, get off Twitter. Getting off Twitter has the effect of freeing you from their censorship and it also helps weaken their influence because you are not participating. Cut the cable, cancel the newspaper subscription and get off of Twitter and Facebook.
No. Twitter illegally enjoys immunity from liability under Section 230 claiming they're only a content host, not a provider despite censoring information. Their censorship makes them a content provider and they need to lose their immunity.
They also need to be charged for every penny of illegal political contributions-in-kind. By banning what THEY determine is unacceptable, they're supporting Democrat causes in direct violation of campaign contribution laws.