By your reasoning, good and patriotic American young men and women should forego the military and just turn it over to the perverts.
How would that help the country?
Your family member is going to have to learn to live in the real world, whether military or civilian. He may be young and impressionable now, but he’s going to have to contend with all types no matter what path he takes.
Don’t let the noise fool you: our military is all business, and no more gay than it has ever been. The only difference is that they can now talk about it.
If he does his job and keeps his nose clean, he’ll be just fine. And he will make you proud.