yes, there are only 2 sexes. intersex is literally mostly females producing testosterone in high quantities, and therefore they are more masculine than regular females.

GENDER is how we interpret sex to our own liking. Sexuality is how two different genders overlap

I think you guys need to realize that most people differentiate gender from sex, and since most people do it it will be recognized as the "correct" way to use the words unless the Queen or Mr. President or the Supreme Emu-ness of Australia or some shit cracks down on the freedom to speak however the f**k you want that makes the English language the English language