Whaaaaaaaaat. No no no, you are completely 100% correct. Hair, clothes, body shape, appearance, voice, habits, hobbies, mannerisms, etc… - absolutely noneof these things define gender, are gendered, or are limited by gender.
Setting standards for what anygender“should” do/have/look like is horribly sexist, and setting different standards for trans people from their cis counterparts is transphobic. So not only is your beta wrong, they’re wrong twice, and they’re perpetuating a really harmful st...