The Gorgias presented by Plato would agree with this. He tells Socrates that if a doctor and a rhetorician debate in front of an audience about how best to cure a patient, the audience will agree with the rhetorician and not the doctor (456b–c). He gives examples to prove his point: for instance, it was the great orator Pericles who persuaded the Athenians to build a defensive wall, not a bunch of stonemasons, who are experts in wall-building (455e).
Things clearly have no changed in 2000 years. Now we have rhetoricians on YouTube and Facebook convincing everyone that doctors don't know what they are talking about, or that really scientists are just coming up with "theories" and my uninformed opinion is just as good as theirs as long as it sounds good and is "common sense".
