I doubt that anyone who casts the reality shows cares about such things until the masses begin to complain. In fact, I wouldn't be surprised if those attitudes were originally considered "plusses" to the programmers. None of those shows seem to be filled with nonconfrontational folks.I would think that it would be standard practice to do a social media search on someone before hiring them at this point....then have a clause in the contract that what they see on social media may affect their employment if it reflects negatively on the the company.
Twitter has been the new method of reserving your spot in the unemployment line. It's also the quickest method of finding out whether someone is racist, sexist, a potential information leak or simply a moron.