One problem I see (besides the paternalism, and talking down to people) is that "rigid schemas" of the kind that drives normies insane when nerdy types exhibit

One problem I see (besides the paternalism, and talking down to people) is that "rigid schemas" of the kind that drives normies insane when nerdy types exhibit them and being smart vs. dumb are actually two very separate things. So, there are tons of people who have rigid schemas, and are actually quite dumb, and watching health food nuts on YouTube is actually a great way to observe them in the wild. If you tell them "don't eat anything that doesn't look the way it looks in nature", they are going to start eating raw soy beans and poison themselves, because "science said so". I don't think it's doing anyone any good if otherwise reputable news outlets, and actual scientists, throw even more oil into the fire of inaccurate information about nutrition.