Well much of the problem is that people are so entrenched. There’s no nuance or acceptance that both positions can have some merit and that it isn’t black and white. The battle lines get drawn up and everyone just unthinkingly lobs fire.
I see no reason why children who want to play with gender stereotyped toys of the opposite gender or boys in leggings or girls in boys shorts etc is a problem. But that doesn’t automatically mean noone is going to tease a boy in girls shorts and warning a parent against that isn’t somehow a heinous suggestion.
I was a girly girl. I did wear jeans like most girls of my era but definitely had a school dress, did ballet in pink tutus, wore hair ribbons. And I liked it. Yup, I liked being a girl. Did it mean I was somehow held back because I shaved my legs and didn’t play with action man? No. It gave me a secure sense of my sexuality - and I am more professionally successful than my boyish brothers. I give plenty of very masculine men a run for their money in my field.
We don’t have to entirely forgo stereotypical gender to create equality. We just need to be tolerant where someone really wants to do things differently but that doesn’t suddenly mean everyone has to go gender neutral.