If it's any reassurance, the human race has historically been even stupider and less educated. It's better today by leaps and bounds.

100 years ago, the world literacy rate was in the 20-30% range. Today, it's ~85%.

The bad news is that the oligarchs use literacy as a weapon, through targeted media. So, yeah, it's not so much stupidity we're seeing, it's just brainwashing, pure and simple.