I'm not getting your broader point here. His point is that ADHD is not purely negative, that it has benefits. You seem to be saying, "But it also has costs!" Sure, but nobody said otherwise.

It's true we aren't a hunter-gatherer society. But neither are we a farming society anymore. Circa 1% of the population works in agriculture. Yes, you can look at the Industrial Revolution as applying farming culture to machines; instead of tilling rows, we do piecework. And 1950s-era white-collar organization is basically applying the industrial model to paperwork.

But automation is ending that era. With the rise of the computer, we are getting machines to do all the boring stuff. We are passing out of the farming/industrial era. It's my belief that we're entering an era where the ability to do repetitive, boring work is becoming obsolete. If we technologists do our job well, the only work left is exploratory, creative, social.

So yes, having ADHD in a farmer's world isn't easy. But as the author says, the world's changing away from that.