I wonder how men would feel about losing their category? Would they not mind , as they would still win, or would they mind?
But anyway, the trans identified males would not like it, because apparently when women lose and lose out on places women should not mind as it happens to so few of them. But when a (trans identified) male loses to other males, this is awful, just awful, and unfair and discrimination and some sort of sport genocide against trans people.
Trans identified men don't want an open category as they will never win. Just like most trans identified females stay in the women's category.