The next big blue collar job is coding (2017)

Doubt it.

For whatever reason, it seems like the way of thinking required for even simple programming doesn’t come naturally to most people. I saw this with a bunch of kids I went through nearly CS classes with. People who could not wrap their heads around pointers or reference semantics. People who didn’t get polymorphism and seemingly couldn’t no matter how many times you went through it with them. People who couldn’t seem to write programs, even very simple ones, despite being clever in most other ways that can be measured by academe. To be sure, it could be the slice I saw was not representative of typical people, but that would require typical people to be better suited to programming than those admitted to a high tier university. Maybe they are, but it doesn’t seem especially likely.

Lots of people who don't know how to code talking about how easy it will be for others to learn.

Coding is a creative endeavor, as such very few people will ever be qualified to do it and even fewer will be good at it. If I had to wager a guess, I'd say at most 10% of the population will ever be equipped to write code.

Also, I’ve seen smart people just not have the patience required to work on programs. There’s a level of pain tolerance required for debugging, for example, that some people just can’t handle - or don’t want to.

Bootcamps I swear train cargo cult programmers. It may work for some, but in my experience they lack the understanding of why they are typing what they are typing. They can go through the motions of what they've been trained to do, but they get stuck extremely easily and have no idea how to help themselves. So then when you start explaining why their program does not work, their eyes glaze over when you start talking about the stack, heap, etc.

They are like cargo cultists. They go through the motions, imitating what the boot camp taught them, but without real understanding of what the computer is doing...