i disagree with your nephew’s conclusions. yes, there will always be people who hate you for your gender identity. i have news. people are jerks. people are going to dislike you for good reasons and bad reasons, you don’t even like everybody. if they hate you for your gender identity, that’s their problem. just be you. when it is safe, let your freak flag fly. because there are going to be people who like you for you too, and that’s far better than when they like you for some facade you put up.