states “You may use the Services only in compliance with these Terms and all applicable laws, rules and regulations”, and links to the Twitter Rules and Policies:
> We prohibit targeting others with repeated slurs, tropes or other content that intends to dehumanize, degrade or reinforce negative or harmful stereotypes about a protected category. This includes targeted misgendering or deadnaming of transgender individuals.
In the Wayback machine, it looks like that direct language was added in an update between October 19 and October 28 of 2018, about four years ago:
Thank you, I'm surprised it's explicitly called out but not too surprised.
That said, I have trouble believing that "why would you agree to a ToS that you don't actually intend to ascribe to 100% of the time" is a question that requires serious consideration.
The key part is how you react when the ToS gets enforced. Like I said, if your account gets suspended and the specific violation is brought to your attention, then either delete the offending tweet or revoke your agreement.
Where in the ToS is this explicitly stated, and when was it added there?