Non-binary AMAB Hate

So recently there's been a certain amount of trans and queer and cishet people who only think AFAB people can be non-binary. The main idea that cishet people think that it's just confused girls essentially and for some reason people only think AFAB people can be non-binary. Also if you are AMAB non-binary you can't wear masculine clothes which annoys me because my fashion gendered fuckery is fluid or genderfuck. This idea that AFAB people are only non-binary and if you are AMAB non-binary you must dress fem is definitely rooted in some sort of misogyny. It's not everyone and probably not on this sub reddit but I'm noticed a lot of binary trans people believe this. It's kind of annoying. Like I had a binary AGAB why do I have to let people know which one especially if I'm non-binary and I dissociate from gender and AFAB and AMAB ideas. Also my hormones growing up were messy and my puberty wasn't as classic as it would be. Also getting annoyed because personally for me I didn't really grow up with gender roles, gendered hobbies, gendered stereotypes, and gendered interests. Literally played with dinosaur in a dollhouse. Anyway yeah sorry for ranting. Just getting annoyed why non-binary people still have to tell people in person what their assigned gender at birth is. Like I'm non-binary why should it matter unless you are really interested in me or my doctor or part of the healthcare system it doesn't.