The thing is, being gay is probably a random distribution or even a gradient with no clear border, just like being "black" (a brazilian, a jamaican, a nigerian and a french blacks are all black but all very different, both in color gradient of their skin color and cultural meaning of it - it s almost meaningless), so it's probably as wrong to say "gay men are earning degrees faster than before" as to say "blue eyed tall people are earning degrees faster than before".

Or, in other simpler words, there are no gay men, just complex multi faceted individuals whose sexuality trends towards same sex mates amongs a myriad of other things happening in their lives.