[inglor_cz]

While this is a plausible idea, I wouldn't underestimate other explanations.

Since about forever, some people became preachers or prophets who attracted crowds and destabilized entire empires. That was true even in the days when most people were poor and illiterate.

Current social networks give a lot of platform to such preachers, and find them an ample audience, because controversy drives attention and attention sells ads.

Quite logically, we get a lot more commotion and political radicalism than before such systems came to be.