You misunderstand. This is my theory: The bad genes are just a bad random combination causing mental problems that mother nature has deemed horrific. The homosexuality is just the vehicle, not the causation.
I hope to hear more about your theory because your second post is less clear than your first!
You said homosexuality is mother nature's way, iow a natural thing with some ostensibly beneficial purpose, did you not?
Now you say homosexuality is some sort of vehicle, but of what? Bad genes? Elimination of bad genes? What?
My position is that it is unnatural and a consequence of circumstances. Animals are adaptable to some extent, naturally; and adaptation entails the possibility of poor adaptation. A classic example would be the "imprinted" gosling that takes a human for its mother and thereafter finds its own kind unattractive.