Interesting point. I'm certain you've noticed on almost every TV program, there has to be a gay, usually male, couple. This is particularly true with the new comedies. I tuned from one channel to another because the one program had a gay couple, and finding the second program was also a new comedy, I bet my friend it too would have a gay couple. Unfortunately, I was of course correct.
The big joke on this second show is that two of the straight men behaved "gayer" (more effeminately) than the two manly men involved in the gay relationship. Though I saw the humor in the joke, and have witnessed such in real life, that program was also changed. Having homosexuality so consistently and persistently shoved in your face and down your throat gets old and tiresome.
I haven't noticed too much simply because I don't watch TV other than an occasional sci-fi show, but I've certainly heard and read about it.