@tatzelbrumm Thats a very good point and makes a lot of sense (and I intend to review those links shortly).
But to be clear, I'm not talking about social media, I know that dumbs people down 10 fold. I am referring to face to face conversations.
@tatzelbrumm truth but I think the two are partially unrelated. In the USa it is larghely the consequence of radicalization/polarization. Online it is at least partly due to the medium.
@freemo I attribute the apparent dumbing down to the fragmentation of social media graphs into unconnected discursive bubbles, inside which different discursive contexts are no longer perceived to even exist.
Case in point:
A certain USAmerican is accusing me of "decontextualizing" Bret Stephens's OpEd article about 
A Day That Lives In Infamy,
namely, 1st of September 1939.
But for that certain USAmerican (consider who he is and what he's infamous for), 
The Day That Lives In Infamy
is 7th of December 1941.
@tatzelbrumm fair point, I think thats at least part of it for sure.
@freemo Now the thing that frustrates me to no end is that when I show them my Mother Of All Godwin's Law Violations, 
which I would like to think is hilariously funny,
they just don't get the joke, because the context of 
1st of September 1939 
never occurs to them.
@freemo Unfortunately,
Godwin's Law¹ is leaking from online to "real" world conversations.
I don't notice it that much because in times of Social Distancing, I hardly have "real" world (offline) conversations any more.
¹ https://en.wikipedia.org/wiki/Godwin%27s_law