Transgender activists routinely impersonate feminists online, particularly lesbian feminists. The most recent example of this was Cathy Brennan (buggedbrennan) on Twitter, which is now suspended. Purveyors of this tactic include Daryl Banks, David Taylor and “Emily” Horsman, all men who identify as women.
The irony of men who identify as women impersonating actual women is not lost on anyone.
screencaps of impersonation account.