You can argue about correct gender pronouns, or testosterone levels forever but anyone with an ounce of sanity knows it simply isn't fair.
Example: men's Olympic 100m qualifying time is 10.05 seconds. The fastest time ever run by a woman; 10.45 secs . The womens world record gets beaten thousands of times a year by men.
It opens the door for any man to compete against women. If a bunch of men who rank anywhere in the top 500 of their sport decided to compete as girls, it would close the door to any natural born woman competing in that sport at high levels.
The guy in this situation was a really bad fighter, I read he only had 6 months of training. He was rocked a little at one stage, because he is a bad fighter, but after that he walked through the girls punches and at one stage, almost took her head off with a punch, before choking her out.
Where are all the outraged feminists on this subject??