The idea that if twitter had a rule against misgendering means Twitter's rules are heavily ideological is... pretty ideological itself.
For one thing, I don't seem to see that rule here:
https://help.twitter.com/en/rules-and-policies/twitter-rules
[EDIT - respondent provided text that appears under a subheading: https://help.twitter.com/en/rules-and-policies/hateful-condu... ]For another, even if I missed it or it's implicit in another rule, while I suppose there's an argument that identifiers have political implications... there's plenty of social space for them to be about being polite in the same way that usually, you should use the names people give you for themselves.
Maybe most of all, though, how many of the other rules would you characterize as heavily ideologically driven? Perhaps the one about not threatening violence against an individual or class? Promoting terrorism? Child sexual exploitation? Suicide? Doxing?
Personally, I can think of a pretty wide latitude of discourse ranging over a variety of ideologies that's allowed me even if I'm forbidding those forms of engagement AND have to be careful to use someone's preferred pronouns.