This stuff isn't rocket science, the basics of residential electric are easy enough for anyone to understand and do properly. Sure, it gets complicated in some of the details, but 99.9% of DIY homeowners aren't going to be doing that. And 100% of them should be getting it inspected from their AHJ to make sure they're not going to burn their house down, that's the real problem- not so much that they're doing a few random things wrong, but that they don't fix their mistakes.
"Inspections? Permits? Why do I need those? I pay the government enough in taxes! I ain't gettin' no permit. Now hand me that lamp cord!"...
100% should be get it inspected, I'll make a wild guess that 40% do.
Ian A.
