Am I a bad person?

you see I'm in a community musical, and well every night before shows we do vocal warmups and there's these two girls that don't have like 2 singing parts and they're not bad by any means, but whenever they do warmups they feel the need to sing 100% opramatic, with perfect posture and their vowels are exsentric. And the worst part of it is they look aroudn the room just wanting someone to look at them so they know that people know they know how to sing correctly. IT PISSES ME OFF!! Am I a bad person for thinking this, or would this tick you off too?