The solution to a problem is never to ignore it, lock it away, out of sight where it will just fester. The people who produce bullshit (maybe for a living, maybe as a hobby) don't just disappear.

Aggressive filtering of what people see in their feeds is not a solution. What do all those able to discern bullshit from factual content have in common? Exercise for the reader as I don't have a definitive answer. A proper education can be thrown away or ignored when convenient; some people just seem to have a good nose for bs. I dunno.