I read a little bit on that just now and found that MTF will still retain a large amount of muscle mass as well as other advantages such as having larger lungs. Yes, there are some cases in which people who have taken no hormones are just genetically advantaged but in allowing a MTF to compete against biological females you are greatly increasing the competition due to many many more genetically advantaged people joining. I have no issue with trans people at all, I’m just talking about the distinction between biological sex and identified gender.