No, no, they're not saying Spongebob is gay. Rather they're upset that a nonprofit video (from the We Are Family Foundation) designed to encourage tolerance and diversity actually encourages tolerance and diversity.
Christian groups  have taken exception to the tolerance pledge on the foundation's Web site, which asks people to respect the sexual identity of others along with their abilities, beliefs, culture and race.Tolerance and diversity for everyone! ...unless they're not heterosexual. ..or Christian.
My favorite bit from this story has to be the caption under the picture of a Spongebob plush:
SpongeBob lives in a pineapple under the sea.And this crucial nugget of information will help you place the rest of the article in the appropriate context. You know, because living in a pineapple under the sea obviously indicates Spongebob's homosexual nature.