@felipeb you're falling into a logical fallacy here. The whole reason Chomsky ends up having to talk to people like Brand is precisely because he's been shut out from serious media outlets further underscoring his point.
And if you ever actually read Chomsky, he explains very lucidly how capitalist oligarchs control media narrative and they are the ones who have representation in the government. Recommend you start with reading Manufacturing Consent. The book directly addresses your confusion.