I'm surprised that a Subreddit would allow those comments. Last time I saw someone call out the hypocrisy between troons and trans-race/age, it did not end well.
I bet that user goes on about gender being a "social construct", while ignoring the fact that race is also technically a "social construct".
I've said it before, but the Japanese consider anyone to be mixed race if you're not pure Japanese descent, even if you're still fully Asian. Like this
half-Filipino/half-Japanese model who, by Western standards, is not "mixed race". If you go to the U.K, "Asian" always means Pajeet/Paki and not Chink like in America. Most peoples in Asia, Europe and Africa are "Native" to their homelands. "Native" doesn't always refer to American Injuns. And America once had the one-drop rule which said anyone was a nigger if you had at least one black ancestor. Those are just a few examples.
They never seem to have any rebuttal except calling trans-race "cultural appropriation". But troons are totally not appropriating womanhood/manhood.