I don't think this is the right target to blame. The much deeper reason is people ARE stupid, while think they are clever and correct. You, me, all the others included. And at the same time, the education once applied to us, failed. Simply put, it's not a technology problem, it's a sociology problem.
Around the year 2002, when I was connected to the Internet for the first time, I thought it was a magic place where you can discuss with people on a topic until the truth emerges and learned, then everybody come to a conclusion and live happily ever after.
That thought was the very first few which been destroyed. Because I instead found people are more likely to turn discussion into a "clan war" and mob each other instead. And that was long before Twitter or even Google is a thing.
Here is a book that many people may already read, The Crowd: A Study of the Popular Mind: https://www.amazon.com/Crowd-Study-Popular-Mind/dp/143410055...
Few on the right pay attention to the Qanon meme. In contrast leftists believ most, if not all, conservatives are rabid Qanon faithful. But Qanon is a myth concocted by the left for the left.
As I've stated earlier, the left simply generates an endless sequence of lies, publishes (or yells them) them awhile and then abandons them when the next lie is concocted for publication or if the lie falls flat in the public eye.
No autopsy, no inquest is ever performed on the left's past outrageous lies. If you ask them about the "Russian conspiracy" they'll ignore you and shout about the rightist "insurrection", their latest meme.
The left is, essentially, a mob:
"The Crowd: A Study of the Popular Mind Paperback – December 24, 2016 by Gustave Le Bon"
https://www.amazon.com/Crowd-Study-Popular-Mind/dp/163600016...