Without having read the whole thread (and because I'm only expressing an opinion, not joining a debate), I find both the character and the actor to be too stereotypical and too self-absorbed to be sympathetic.
In a scene where the clearly straight guy, Finn, lashed out and said that he changed into his underwear in the bathroom because of the way Kurt looked at him, and the audience was supposed to feel sorry for Kurt, I totally understood Finn's position. There has been a whole plot around Kurt's crush on Finn where Finn has been supposed to be learning about his own homophobia and while some of it has probably been instructive, much of it has made Kurt's character look positively creepy. Like an obsessed stalker.
I admit that some of the character's (and, I assume, the actor's) in-your-face flamboyance makes me vaguely uncomfortable. I get the "it's cool to be who you are message" although I don't think being that heavy-handed is either necessary or realistic and I can't see it flying in any high school I can imagine. Moreover, the writers haven't given Kurt any really strong redeeming qualities other than his out and proudness. They need to flesh him out as a person, show more intelligence, compassion, humor, etc., to make me care about him.
