A woman self-identifies as a lesbian after she realises she is attracted to women. I am in no position to say, no, you can't feel that way, look at your sexual organs
Of course you aren't, because looking her sexual organs makes no difference to whether she is a lesbian or not
A man self-identifies as a woman after he realises he feels like a woman. I am in no position to say, no, you can't feel that way, look at your sexual organs
Yes you are, because you can tell him "how you think you feel is your own affair, although how you think you can "feel like a woman" without ever having been one is beyond me, but look at your sexual organs, you are clearly a man".
What we need is a return to reality. What we need to say to trans people, and everyone else is this: you can feel however you like. You can present however you like. You can wear what you like and be addressed as you like and act as you like. You should have the same respect and acceptance as anyone else, you should be left alone to live as you choose....up to the point where you want us all to say that you have actually changed sex and that feeling like a woman but being a man gives you access to any and all of womens spaces.