Gradine
🏳️⚧️ (she/her) 🇵🇸
I'ma stop you right there. First, your sex is determined by your genetics, not your gender. Second, personality is not tied to sex at all, but to gender, which is entirely socially constructed.Some of my personality choices are inherently predetermined by my gender which is the result of my genetics. Therefore, according to your own words above, I cannot be sapient. Nor can anyone else who has a gender or is gender neutral.
There are tons of ways to poke holes in "sapient creatures can't have inherent traits", but this definitely isn't the business. For instance, I'm inherently hot AF.

With regards to personality and free will and choice, well yeah, the debate of nature vs nurture has not been settled, but I think most people have settled the answer lies somewhere in the framing of "both, but..."