Medically that is true, unless they have a uterus they are unable to conceive a child. But they can have their DNA, sperm, or both mixed and used with someone with a uterus, making that person carry their baby.
It’s spread through any contact, just touching someone (shaking hands etc) can do it, and can be transmitted via surfaces. It can be transmitted sexually, but heterosexually and homosexually in equal measure. I do not get your point.