One issue I have with the 'other' thread is that there are transwomen who you really cannot tell are trans. And yes, that does come down to 'judging' and 'passing'.
You may call them a bloke but society treats them as female - along with all the shit that can come with that. Being subject to male violence, being judged on appearance, sexism, being treated as a second class citizen etc - all the issues that are discussed by feminists and are real issues. Obviously there are some concerns that they won't ever face due to not having the biology.
However, society looks at them and treats them as female - you can call them male all you like but that does not hide the fact that society treats them as female.
Then you've got those transwomen who don't have that issue - but instead they are treated as transwomen, subject to the fear of male violence, ridicule, abuse and a lot of discrimination. You can call them male but again, society does not treat them as male but treats them as transwomen - along with all the shit that comes with that.
We should be fighting for everyone to be treated equally regardless of who they are. We should be fighting for women to be treated equally and not have to fear male violence, sexism and being judged / oppressed by their body.
You can call a transwomen 'male' but society does not see a 'male'. They see a woman or a transwoman and treats them 'appropriately'.