> It's a disorder determined by genetics.
This is wildly inaccurate.
> Either you got the genes, or you don't. Pretty binary.
Even more wildly inaccurate. It's not remotely binary. There is no autism gene or genes. Environmental factors (nurture) still factor heavily.
https://www.spectrumnews.org/news/autism-genetics-explained/
and a myriad of other articles and research papers one can find by googling "genetics autism."