That assumes that all users on Twitter are equal. By Twitter's own rules [1], there are two classes of users. Elected officials are held to a different standard. That's why this tweet is hidden behind a click, rather than removed. That's why Trump hasn't been banned despite repeatedly violating the TOS that he agreed to when he signed up for his account.
It makes sense to me that if elected officials (a tiny fraction of the population who already have a much bigger voice than the common citizen) are allowed to break the plebeian rules, then social media platforms should be more willing to point out when they're doing so.
[1]: https://help.twitter.com/en/rules-and-policies/public-intere...
https://www.nytimes.com/2020/05/28/technology/trump-twitter-...
I just skimmed through that ruling, and couldn't find this. Could you cite where she ruled that twitter couldn't remove his account?