Twitter is a social media platform and it should behave like one. Things get complicated when it intervenes in the politics and take sides. If they want to play politics, then they should not claim that they are just an intermediary. It also means that they are responsible for the content of their users. And this is applicable not only for Twitter, but also for other social media platforms such as FaceBook and Instagram. We all saw how social media can influence the elections, when these platforms put a complete gag on information related to Hunter Biden's laptop (a few weeks before the POTUS elections). Even a Washington Post article was removed from Twitter (despite the left wing bias of that particular news paper). On the other hand, left wing campaigners were actively posting fake news and Twitter took no action despite multiple users reporting them.
I agree with you on this issue, though I am not approving of anyone banning Twitter or any social media platform for that matter. I find it horrible when social media would be imposing its ban on people or organizations they deemed to be dangerous as it is not actually on their power to do so - yes they can do fact-checking, and they can even come up with warnings but beyond that it would already be necessary censorship. Twitter is already inserting itself into "What's happening" in doing so instead of becoming a platform where anyone can freely express his thoughts and ideas as long as they are legal. We have already entered high-tech censorship and generally this is not good.