Tbh, I don’t see how gender identity can be benign in a world where we still see so much discrimination and hatred against such ideas, but I am glad it was in this persons household. Though even then, I am not sure if it’s truly ever “benign”, it’s part of one’s self actualization and therefore meaningful and impactful for the person experiencing it
It varies by person. Some use the word parent, some use mom or dad or both.