You have a point about jerks existing in Hollywood. Not all successful people in the biz are nice like Tom Hanks and Donny Osmond. I have heard people who work behind the scenes on Oprah and other shows say you would be shocked at how some celebs come off behind stage. They are not very nice and are quite a pain in the neck to those around them. They say you would be shocked to know who is like that. So, it seems that being a nice person is not a requirement for being successful in show biz. What matters is if you can get the job done.
I do wish the judging on this show was a little more transparent and less BS. I don't see the need to handle it the way they have. I have agreed with the last 2 weeks of judging though. Things seem to be better since the chosen one left.