It doesn’t matter how easy a job is to learn. What matters is how many people are willing to do it and how important it is to society. Trash collection may be mostly driving trucks and throwing bags in the back but very few people are willing to do it and society grinds to a halt without it so those folks should be making way more than some Facebook coder who adjusts ad pixels all day.
The problem is the US economic system is so backwards it values the ad pixel pusher more than the trash collector. At least until there’s a communicable disease going around and suddenly the trash collector is recognized as an essential worker and forced to come to work while the ad pixel pusher “works” from home.
I heard rumours that trash collectors in the US earn pretty good money, in part due to being unionized. I've experienced what happens if binmen go on strike firsthand and / or seen it on the news, it's not pretty.
Whereas industries where there's plenty of supply, like the service industry, cannot get a union off the ground because for every unionized employee, there's plenty of un-unionized people waiting to get a job that doesn't pay them enough, but it's a job and that's good enough.
The problem is the US economic system is so backwards it values the ad pixel pusher more than the trash collector. At least until there’s a communicable disease going around and suddenly the trash collector is recognized as an essential worker and forced to come to work while the ad pixel pusher “works” from home.