Let's remember that even among biological women there is sufficient diversity in size and strength. Would the governing sport committees propose that we handicap Serena Williams due to her larger frame and natural strength? Of course not. She would arguably beat another smaller transgender woman handily and probably a good handful of seeded men players as well.
Martina Navratilova took the opportunity to take a shot here based on misinformation and not on fact and it is the kind of argument that helps anti-trans sentiment gain traction.
Let's base qualification on the bloodwork and leave it at that shall we?.