this excerpt from the 'Abstract'...
"There is no evidence that one’s postnatal social environment plays a crucial role in gender identity or sexual orientation. "
Now, it is scientifically appropriate for someone to present a study that counters this assertion...that's how we get to the truth of any matter...please provide one...i.e. not just your gut instinct, or a statement to the effect..."Well, everybody knows...".
Link: https://www.sciencedirect.com/science/article/abs/pii/S0091302211000252?via%3Dihub