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.
Twitter has no interest in doing that. I would recommend people start asking their lawmakers for better rules around putting government messaging on public infrastructure rather than use of accounts on third-party commercial services.
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).
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.