That makes sense. Sometimes common arguments, advice, and old ideas get shared ad nauseum around social circles, like moldy old memes that everyone, except them, is tired of hearing. One person says stupid idea with conviction, and others listen. Now when someone else repeats stupid idea around the first person, they know they’ll be agreed with - it’s an easy way to get that dopamine hit and strengthen a social bond. Others in the group then start to think that stupid idea is important for them to also believe, and the effect snowballs, as more of them share stupid idea with others - expecting to be agreed with.

People keep doing this, over and again, never once examining the words they repeat. This leads to people who confidently say ignorant crap like, “You don’t need medicine, you seem fine to me!” despite the fact that they’ve only ever seen you after you’d taken your medicine. It’s likely someone in their social circle put that idea in their head once, and they never critically examined it because it’s easier and more rewarding to simply repeat things without thinking about them.