The beauty, from a nefarious standpoint, is that you don't have to pay people to spread disinformation. You just have to use the right psych techniques on them and ensure they get proper reinforcement.
These are the techniques that have turned my family and many of their friends (and clearly a measurable percentage of Americans) into the exact opposite of the values they taught me and demonstrated for decades.
They truly believe virtually anything spoken by people like Limbaugh, Glenn, Orielly, Carlson, etc.
If you try to use some logic or evidence, even showing two conflicting statements made by one of those idols, they just shut down. The cognitive dissonance is too uncomfortable.