Now I feel really bad for the hero's party. Sure, they were being jerks, and their accomplishments are all thanks to MC, but the way the story is framed makes it look like the hero's party knew full well about his abilities, deliberately used him to gather achievements and fame, and then kicked him out once they're done with him.
Besides, you wouldn't disclose your godly supporting skills to your childhood friends for years, not even one of them, but was completely fine with making a show out of it in front of a crowd of strangers that you just met a few hours ago? Why?
Sorry, I know the writing isn't exactly stellar, just needed to vent a bit.