Oh, nausea, you're so adorable.  In the first place, definitions are- by definition- objective; they are not "self-serving" because they are intangible things with no motive.  Sort of like facts: they don't have feelings, and certainly don't care about yours.
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In the second place, I "didn't come up with the definition" of 'sex.'  You know who did? Scientists.  And they did so using.....(wait for it).......science.  I know it flies in the face of your Leftist social agenda, but please- do what you can to move on and accept this.
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Lastly- "homophobia?"....really? You do know that gender dysmorphia has nothing whatsoever to do with homosexuality....right?  This MO of, "if you can't win the argument then claim ______ism" is what lost you the election and both houses of Congress, right?  If you're going to play victim- at least get your victim terminology down correctly.
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Please, come back to discuss science any time- I'm here for you.