If a man identifies as a female, but doesn't go through the physical operations until well after puberty, say 19, then wanted to join pro women's sports, would that seem unfair?

I mean, she has the musculature of a man, which would make her stronger than 99% of the women she is competing against. I know that taking estrogen is part of the course, but what if she didn’t take it so she could retain that edge? Or,what if, on top of that, she started taking steroids to boost her game. Would this be fair?