"Think of how stupid the average American is. Then realize that half the population is stupider than that." ~ George Carlin
I'm a fan of early George Carlin and early Robin Williams. The thing is, comedians grow old, angry and bitter. I had a few paragraph difference of opinion with some knucklehead that felt that Carlin was consistent from day one until the end. To quote a Youtuber (The Critical Drinker) "And then you come to the realization that granny isn't the young, beautiful and happy person she once was, she has changed and the changes have not been pleasant."
Unfortunately, there are a lot of people out there that are very much single issue on any topic. I know that there are guys out there who only care if their NFL games come on that weekend and nothing else. They aren't stupid (they can rip off endless stats about their favorite team) they just tend not to pay any attention to anything, except the Chicago Bears, or Green Bay Packers or whatever team. They can balance a household budget, drive a forklift, or drive a truck, but at the same time, all they care about is whether their favorite QB will get 3,000 yards this season.
I have a neighbor whose whole existence is video games. He has a job and he could be better at it, but all he thinks about all day is video games, video games, video games, video games and video games. He will briefly mention another subject, but then instantly comes back to video games. He's not stupid, just addicted.