It would be justifiable because gay men are certainly discriminated against in those countries -- to the point of being thrown off rooftops. And women are obviously second class citizens in any Islamic society. So both of these groups can more creditably lay claim to be fleeing persecution than all of those aggressive young men we seem to get stuck with.
From our point of view, gay men would probably be less prone to violence, and they certainly wouldn't go around raping Western women. Instead of having a repeat of that infamous mass molestation in Cologne, they could have mass fashion critiques instead. ("Plaids and stripes in the same outfit? May Allah be with you!")
As far as the hot young women, well, that's self-explanatory.
The young man knows, of course, that there's no chance such a policy will be instituted.
But that's not to say the West wouldn't be far better off if it were.