I guess what I'm saying is that a movie shouldn't explain this concept to children. That's what parents are for. But we all know many parents have been slipping as of late. You're talking about a child's movie. Child, as in being that doesn't know about that kind of level of relationship or lifestyle. Putting a character that doesn't want a wife and then calling that character gay isn't going to make people more accepting of the gay lifestyle. It's just going to give a stereotype more power. Think about it...
Gobber is not exactly a stereotypically gay character. He's the armorer who provides weapons for all the other warriors, trains the kids on how to defend themselves and creates a prosthetic leg for the hero when he gets injured at the end of the movie. It's the more "grown up" cartoons that play into stereotypes with their homosexual characters.
Gobber has an important role in the story, and his relationship status/sexuality doesn't even come into it, so the audience shouldn't really care.
I haven't seen the sequel yet, so I can't really judge how they've gone about the subject, if they've included it at all, but my problem is with how people are reacting to the idea of a character being gay. We hear the word "gay" and we immediately think of what gay men get up to in bed with each other. When a male and female become romantically involved in a kids movie, does the audience immediately start to imagine what they get up to in bed? Maybe we should take our minds out of the gutter, and reserve judgment for when we've actually seen the movie.