after bullies at school made him doubt his masculinity and sexual orientation.
The bullies had their role in affecting his mental health. But they are not the ones who took advantage of the situation to coddle and enhance the affects of the bullying to convince him to go through with "transitioning", performed the "transitioning" procedures, or raked in the cash for the same. These individuals - the groomers - were far worse at bullying him and making him doubt these things than the bullies at school.
“Daniel decided to become a woman after bullies at school made him doubt his masculinity and sexual orientation.”
That’ll teach those mean bullies!