Multiple commenters have stated his stances are misinformed. Are his stances misinformed or is he simply poor at arguing for one of the many stances people can take on trans issues (issues which, if everyone is honest, are pretty complex)?
The stance that it is wrong that there should only be male and female sports leagues AND that trans people should automatically be included in whichever their identification maps to, is a completely defensible and not misinformed stance. It may be wrong, but so might the opposite stance held by trans activists (which is also likely completely defensible and not misinformed).