All this outrage about some nobodies being mean on a TV karaoke show. Firstly, it's a "reality" show so this is all probably a media stunt anyway. Secondly, even if this isn't a stunt, this is just what these shows do. If you decide to enter one of these competitions you're opening yourself up to the judges saying mean things to you. Simon Cowell anyone?
Not saying the judges are in the right, but the reactions of the media and a large section of the public seem way out of proportion to the incident in question.