It's contradictory, there was already a movement (feminism) that promoted "gender is a social construct" which was to say, no one should be pressured into acting inline with gender stereotypes. Women can be masculine, men can be feminine, let bygones be bygones - the way you act and dress should ideally have no relationship to your sex.

The "men with gender identity issues" referred to by parent have this up-side-down, instead thinking that "social transitioning" aka "living as a woman" is a step towards being a woman, this is not destroying notions of gender, this is elevating gender over sex