Earlier quoted context omitted.
Jack Dorsey recently said something about launching a decentralized social media system, this is probably the reason. Unfortunately a site gets really big like twitter you just have to bow to the powers that be, or they'll make life hard for you.
I wonder, if at this point, Twitter should consider updating their policy to state that government officials are no longer allowed to use their platform and close their accounts.
We live in an age where open web standards can create software that looks and feels a lot like the existing closed/commercial platforms (ActivityPub/Mastodon et cetera).