Please note that Leila recognized a genetic defect, right? And at least partially corrected a problem.Lee was born Leila, he transitioned as an adult, but not a complete transition. Lee is legally a man now and happily married to a woman, they welcomed their first child 2 years ago. Do you have a problem with that marriage? It seems quite similar to yours, you chose to live as a man not a woman - you had a choice that most others don't have.
Second,'Lee' and his wife did not welcome 'their' first child. Only one of them can be a genetic parent.
To answer your question, both my sons are the genetic offspring of my wife and I, not the lesbian in me.
SS couples have every right and ability to pursue gay unions. It will never be marriage.