Davi, have to laugh - I've had quite a few people tell me, "You'll lose weight if you eat more (and presumably smaller) meals." Heh, the only thing that has ever really worked for me was eating less meals or none at all, and carbohydrate restriction. The inertia of the populace's mindset is huge, though I do think that word is finally getting out, if still in small measure.
Around 400 million people are diabetic, worldwide, and about half of them don't know it. Being a recently diagnosed Type 2 myself, it's much on my mind, and I see so many people spouting patent nonsense about diet, nutrition, and weight loss. You are right - they should "stay in their lane" and not be worrying about others.
I also see untold numbers of people who are off the road as far as their own health, and either diabetic or headed for the disease. It goes beyond the "Standard American Diet;" it's an amazing daily progression through an almost never-ending carbohydrate intake. The french fries, breads, biscuits, bagels, sweets, doughnuts, pies, cakes.... Or is it literally drinking a case of Mountain Dew a day. Yeah, every 30 or 40 minutes, all day long, another can. I shudder to think of such carbohydrate dominance.
And of course, for 45+ years, that was me.