Rampant dishonesty in our day—by politicians and voters alike—is in large part due to the effects of postmodern philosophy, which foolishly tells us there’s no such thing as truth. (no truth = no lies)
Postmodernism is at its very core nothing more than a sociopathic trait.
It’s all about being able to get away with lying.
All leftists (and all republicans and conservatives who think it’s ok to lie) are themselves victims of a greater lie.
Does it mean they’re stupid?
Yes.