[jwm4]

In other words, it's all Drudge and Fox's fault.

This "study" is utter nonsense.

[liquidise]

The study suggests that deregulation added more divisive programming. It then claims this ideologically pointed reporting is partially to blame for political polarization.

If that is the case, the internet would only exacerbate the problem. So it sounds like you're spot on.

[CamperBob2]

Can you elaborate on why you feel its conclusion is necessarily bogus?