It’s a well known issue on plenty of popular sites (Facebook/Twitter/reddit/etc.). I’m sure federated sites like Lemmy, Mastodon, and others are just as susceptible to it as well.
I’ve commented on posts in the past to try and combat it and occasionally still do. But there’s a real limit to the amount of stress that comes with trying to convince someone that they’ve been lied to and could be misleading others by repeating what they heard. Especially with the whole “fake news” crap that has been surging I’m the last handful of years. Any proper data used to support truth is just dismissed as fake news.