Do non-binary identities reenforce gender stereotypes?

Ok I’m sorry if I sound completely insane, I’m pretty young and am just trying to expand my view and understand things, however I feel like when most people who identify as nonbinary say “I transitioned because I didn’t feel like a man or women”, it always makes me question what men and women may be to them.

Like, because I never wanted to wear a dress like my sisters , or go fishing with my brothers, I am not a man or women? I just struggle to understand how this dosent reenforce the sharp lines drawn or specific criteria labeling men and women that we are trying to break free from. I feel like I could like all things nom-stereotypical for women and still be one, as I believe the only thing that classifies us is our reproductive organs and hormones.

I’m really not trying to be rude or dismissive of others perspectives, but genuinely wondering how non-binary people don’t reenforce stereotypes with their reasoning for being non-binary.

(I’ll try my best to be open to others opinions and perspectives in the comments!)