Mainstream is not professional.. just look at Fox news if you need convincing.
that say that if you cannot make the difference between an professional (or informed) opinion, and some redneck with the deep belief that the Earth is flat then I cannot do anything for you
Mainstream news, by all standard definitions, is professional. Fox News is the same as CNN and all the other channels in between, with countless examples of misinformation and outright false stories by every station.
Nobody is asking you to do anything for them, in fact they're asking for the opposite; to let them decide for themselves. And most people can do that just fine. Just because some extremist views exist does not mean the majority believes in them.
that say that if you cannot make the difference between an professional (or informed) opinion, and some redneck with the deep belief that the Earth is flat then I cannot do anything for you