I don't mind Cinemasins. They're not giving serious reviews, just a bunch of nitpicks that most people don't care about. I don't find them that funny but they're not offensive either.
If a film didn't perform to the studio's expectation then it's a disappointment no matter how much it made. Didn't Katzenberg want it to make a billion dollars? Unrealistic but that was their goal and Dragons failed to hit it.