It's irrelevant what they're "turning into" because it's NONE OF YOUR BUSINESS, unless she is a member of your immediate family.
Secondly, the swimmer who did so well in her first swimming meet after being on the blockers for a year, had slower and slower times the longer she was on the testosterone blockers. Originally ranked in the low-60's as an NCAA male swimmer, she ended up being ranked in the high 60's as a female swimmer. Little to no difference.
Renee Richards, the most famous trans athlete, was never ranked in the top 10 as a female tennis player.
This notion that once they make the switch, they'll "steal" medals from "real women" is ridiculous.