Why is that if I said I wish I was white people will tell me I am wrong but If i said I wish I was a boy..?

Why is that when someone says that they don't want to be their own race(black, white ect.) and try to change their race they get criticized and get told they should accept who they are and love themselves. But when someone says they don't want to be their own (boy/girl) and someone dare tell them they should accept the they are they are called bigots, s, unaccepting, hateful, not open minded and/or intolerant?