XXO, XXY, XO <- in humans. Hermaphroditic plants and animals are very common as well. Fruit flies have so many different sexes scientists have developed a fucking formula to figure out which one. It is not binary in nature and doesn’t make sense to call it binary in humans. Especially as gender is a social construct and like all social constructs its interpretation is subject to change. The arguments they make are founded on ignorance and nothing else.
It’s not however, if you’re getting your balls removed. There is a reason for that and. You would most likely have been taking a testosterone suppressing medication such as spiro. It’s not a requirement to identify as transgender but that’s not changing your biological sex unless it is.