That sure is a strange thing to say. No proof of the first statement (only assumptions), and in my 16 years in the Military (Army-combat arms), I never knew one homosexual. Either you are a magnet or there is an interior decorating unit I am not aware of. Very strange.
The Spartan warriors were predominately homosexual, as were those of other Greek city-states, so the cave theory probably isn’t far off.
I was in military intelligence, but I knew several lesbians in military police and two male homosexuals in food service. I didn’t know gay from stray when I went in, but I did have a 128 GT score and the signs are there if you’re paying attention.