This article is backwards. The shows don't make you terrible people. Terrible people watch the shows, and use these shows as a justification for bad behavior, materialism, and a lack of empathy. Shows like this are a filter bubble, if only in a different medium and a different name. The only thing that these shows could do is for the people on the margins, this type of media can push you more towards the materialism and narcissism of the characters portrayed. But from what my experience is? You have to be on that spectrum first.
The aspect of anchoring is Behavioral Economics 101 - That's Kahneman & Tversky, Ariely and all the rest. Make someone say the Pledge of Allegiance or read a bible passage and they're less likely to cheat on a test. Make them look at pictures of diamonds and they'll be less empathetic towards poverty. This isn't controversial; this is settled.
The whole "those who watch X-factor are dicks" part is a lot less settled and would require an entirely different methodology. To no one's surprise, the study appears to have been pulled.