Absolutely any policy that protects people can protect neo nazis. If a platform wants someone gone for being a dickwad, they can just ban them (not that that's gonna happen to nazis on twitter). Questioning sensible rules because they happen to protect bad people sometimes is some dystopian shit. It's the same line of argument as wanting to ban e2e encryption to scan messages for csam.
Doxxing is a crime in some places, only selectively enforcing that would be quite the problem.