The problem is that if you do away with gender roles, then a gender reveal party turns into a baby vagina/penis reveal party. It’s a creepy concept that is only normalized because of society’s hyper fixation on gender roles and we should just get rid of it.
They’re not disclosing the gender of their children. They also don’t take a blood test to find out the chromoses, they literally have a doctor look at the baby’s crotch with an ultrasound and throw a party based on what they see.