> I do see it as more of a craft than a typical trade. There are just too many ways to do things to compare it to e.g. an electrician.

There are sooo many ways to get electricity from one point to another. The reason that a lot of those options are no longer used is not because they don't exist but because they were legislated out. For example, if you want to run wild just run a single "hot" wire to all your outlets and connect each outlet's neutral to the nearest copper plumbing. Totally esoteric, but it would deliver electricity to appliances just fine. Safety is another matter.