First Spongbob Squarepants and now Shrek.
This is just nutty. If you look hard enough you can find a pro-gay message anywhere you want.
I remember as a kid having a friend who's dad wouldn't let him watch M*A*S*H because Klinger wore a dress. It didn't matter to this father that Klinger donned an evening gown to get out of the army, or that the core message of the show was a celebration of peace. Politics was irrelevant. All that mattered to this father was that a man was wearing a woman's clothing.
I find these people astonishingly shallow. These folks who are looking for so-called pro-gay messages under every rock. If they weren't so ridiculous they'd be dangerous.