Completely agree, but why should I deny trans men exist as a result?
I don't believe in God. Do you think this means that I don't believe Christians, Muslims, Jews and other monotheists exist? 🤔
I accept that there are some women who would rather for various reasons, be perceived as men. I don't have to agree with them that having their hair cut short, sporting facial hair, mowing the grass and not wearing makeup, dresses, skirts, high heels or handbags, makes them a man. Not least because all those things are true of me too and they don't make me any less female.
Disagreeing with people about beliefs they hold sincerely doesn't mean that I think they don't exist or that they shouldn't have the right to hold their beliefs. I am not going to walk into their churches/synagogues/mosques and shout that God doesn't exist.
But equally, I'm not going to confess my sins to a priest, fast for Yom Kippur or pray facing Mecca to make religious people feel validated.
I do not need to partake in other people's religions. People who force their religious beliefs upon others are insecure and illiberal extremists.
I can still respect people who sincerely believe things I don't. We can disagree.