I don't have data to answer how much of what causes this, but certainly there seem to be some very savvy ad strategy decisions on the Republican side such as th

I don't have data to answer how much of what causes this, but certainly there seem to be some very savvy ad strategy decisions on the Republican side such as this: https://twitter.com/kevinroose/status/1290739595278028800 https://twitter.com/kevinroose/status/1290739595278028800 TLDR is that if you know certain subjects will get your base talking about something else that you aren't allowed to promote (such as a conspiracy theory), you promote the hell out of real news stories about those subjects knowing your base will a) share and b) discuss the conspiracy theories in the comments. It's a very clever way to use money to boost the conversation around untrue claims, while technically neither the ad buyer nor seller are responsible since it's the users doing the lying. And I don't know what the solution is, fact checking every user comment isn't feasible..