[thu2111]

You inverted the statement in the act of repeating it back - people were misled into believing eating fat was unhealthy, not that it was healthy.

And this is a part of the problem, right? It's not whataboutism, it's a lesson from history. Your belief in the incorrect expert advice of yesteryear is so strong that even trying to type out the opposite is hard.

At the moment a whole lot of people, of the type who read and post to HN, have decided that disagreeing with "experts" is divisive. The problem is these "experts" aren't really experts by normal definitions, like someone who has a strong track record of correctly understanding and predicting a complex topic. The word is instead being used to mean something more like, "people employed by the government who claim special knowledge". Nutrition is the example chosen here for non-expert experts, because nutrition has been hit hard by the replication crisis. But it's hardly the only field with this problem - basically every medical authority has discredited itself during COVID.

Disagreement with authority is a classic justification for free speech. It is inherently perceived by the ruling classes as "divisive" because that's exactly what it does - it divides people into those disputing their authority and those who don't. You thus can't combat "divisiveness" without simply shutting down all disagreement with the government in all ways.