Feminism is a specific ideology which I believe to have a false foundation. If criticising a specific group of people is a sign of right-wing authoritarianism, then the universes of plethoras of anti-Republican, anti-Trump threads ought to qualify. The entire politics discussion forum is an endless kvetchery of anti-Republican, anti-Trump hatred, day after day.
If by the 'trans community' you mean some trans activists who sow a deranged and Orwellian ideology, and have worked and succeeded at shutting down free speech, who are directly responsible for the exponential rise in the treatment of gender nonconforming children (like I once was) as if they were trans, using the most appalling gender stereotypes that would embarrass even an actual right wing authoritarian, destroying women's single-sex spaces and sports, and subjecting children to drugs for which the long-term effects are unknown, then sure. I start threads opposing those aspects of trans ideology. Of course, the trans people I follow on Twitter are absolutely hated, shunned, and reviled by the left, because they don't toe the line.
and other movements, groups and communities using any strange or remote behavior that you find in a corner of the internet that you then apply as representative of the whole group in order, as you admit in the thread, to “bring them disrepute.”
Feminism ought be brought into disrepute. It is systematically harmful to men, women, and children. It breeds bad thinking, bad policy, and bad blood.