Seems legitimate, few can argue from a strong position against them due to hypocrisy.
People are against this, but for splitting up men and women in "actual" sports because of biological differences...yet not for splitting based on race grounds even though different races are more suited to spiriting, endurance running, swimming, RTS, and the like because well...that'd be "racist" (just science in actuality).
If you want everyone to play together in everything, or everyone to be segregated further than you can stand strong...otherwise you are hypocritical somewhere.