Yes you do need the scientists, because those aren't the criteria. In particular, only trans women who have transitioned and maintain a sufficiently low testosterone level would be allowed to compete. And whether that is enough you absolutely do need scientists to tell you.
Written by Rex Kerr
One who rejoices when everything is made as simple as possible, but no simpler. Sayer of things that may be wrong, but not so bad that they're not even wrong.