At a certain point, people start saying things like “X is supposed to be bad now, but give it 5 years and it’ll probably be healthy again!” or “they say you’re not supposed to do Y anymore…”.
Because, of course, most people get their information from news sources who are always trying to find the next superfood or poison that we’ve all been consuming for hundreds of years. And often, many of the things were taught when we’re younger are no longer considered correct, or at least fully correct, anymore.
So at a point people just get tired, ignore all of it, and just do whatever they were going to do anyway, because from their perspective, scientists can’t make their mind up anyway.