I know a few people who are really good plumbers, electricians and general contractors. Basically, they can see a problem and have the skills to break it down and then create a solution.
None of them can type very well and barely know how to use the internet but I bet if they focused on learning the basics of computers they would end up being top notch programmers.
If someone can't even type well, that alone adds what, 80-120 hours minimum of learning just the basic skill alone to get to a level where they can focus on programming without having to focus on input. Specialization exists for a reason, there just isn't the time to learn everything. And the time investment to learn a trade is ~equivalent to the amount of time to learn to program.