The desire of the parents does not affect the sexual orientation of the child, besides, I cannot imagine how the sexual orientation of a child can change if in all previous lives this child was a traditional sexual orientation.
My parents always wanted a girl, but a boy was born, from this I do not feel any sexual attraction to men, I have always been a traditional sexual orientation and when I am sexually hungry I very much want to fuck women, of course, I also want to fuck women when I'm not hungry, I have a desire and I know exactly what I want, so what the so-called psychologists write is not true.
Probably this psychologist is not competent.