You don't need to participate, but that doesn't make "biological male" any less exclusionary.
Especially since it's a nonsense phrase. And even if it wasn't, I sincerely doubt the author actually knows about the chromosomal or endocrinological status of that person Biden spoke with.
If a biological male either wants to be a woman or thinks he is a woman, I must call him a woman or I am “denying trans people exist”?
They can live their life however they want but why are they requiring me to participate?