While I agree that the barrier to entry is lower, I feel like you may be overestimating the average programmer’s “hands-on” abilities as well as the simplicity

While I agree that the barrier to entry is lower, I feel like you may be overestimating the average programmer’s “hands-on” abilities as well as the simplicity of being a plumber. Sure, most programmers have the problem solving skills to get the job done, but when it comes to actually doing it, things are sometimes different. In my own personal experience, only a small percentage of the programmers that I know (myself included) actually know how to turn a wrench, figuratively speaking. Another example is welding. I know how to weld, but I am not good at it. The only way I would get better is to keep practicing, which I never really have a chance to do since it’s not my day job. This is a slightly more extreme example than plumbing, but a similar concept. I would consider the usual plumbing stuff to be more along the lines of sweating copper pipes, using lead and oakum to connect cast iron sewage pipes, installing toilet flanges, etc... I feel like connecting a dishwasher is more along the lines of a handy man.