

Reads to me like someone paid electrician rates for every hour of labor involved. Much cheaper to do most of the work yourself and then have it inspected, or even then pay to have it fixed/brought-up-to-code/whatever.
Personally, I’m going the DIY route partially because I want it designed for inspection and servicability to a degree most installers would never accomodate, and certainly not for less than, say, 5x what it would cost to impliment myself.
These projects collaborate and copy each-other’s work way more than you would think. When one stagnates, others pick up the slack, and when one pulls ahead, the others increase their efforts to catch-up. More potential solutions for the same problems is a good thing.