I agree that the parent comment kinda misses the point that social isolation is bad for you. But "we're not designed to process the information avalanche of the modern age" does make me squint.

My intuition tells me that cavemen probably had worse quality of life (experience-wise) than modern humans.

Information input risen drastically long time ago, what was it, three thousand years from "here, this is a knife, you cut here" to a full blown education system?

I think our brain elasticity is good enough to handle much much more before it overloads (or whatever are the consequences of "unnatural" amount of information).