Comics like Zach G. and Patton Oswalt can get away with gay jokes because they have liberal street cred. They have done enough sets that everyone knows they are safe lefties. If they do gay bits then its OK because they're just being ironic.
The hissing has let up lately. Maybe the gays, since being out and "proud", feel less threatened. Or maybe they're just getting fat, lazy, and disorganized like the rest of us.