Just a comment . . . And much to my surprise, a true story.
A couple years back, I started a new layout and made the decision it would DCC throughout. It's relatively small, a HO double deck plan in 12' x 14' extra bedroom. I studied all the files, went to DCC clinics at a number of conventions, and built the layout using the recommended wiring practices.
Upon completing the track work, which includes a twelve track fiddle yard, multiple DCC friendly turnouts, cross-overs, and sidings, I was tickled pink that first train navigated every inch of track without so much as a hiccup.
Jump ahead a couple of years and I'm facing an expansion of the layout into an adjacent room. A review of the wiring was needed and during that exercise I discovered I did not complete all the recommended wiring practices, as stated by "the experts" from a couple of years back.
My discovery? Well, much to my surprise (even though the entire layout had a main power bus under every foot of length) . . . There was only ONE pair of track feeder wires powering the entire layout! One and only one. Two years of running multiple trains and never a power problem.
We're the experts wrong? Or was I just lucky? Or what? I doubt a specific answer will ever present itself, and I'm sure there will be opinions galore.
As for me and the layout and the discovered omission . . . I say I'll let this sleeping dog rest where he is and do nothing to upset him.
My conclusion to all of this discussion is this . . . DCC is the simplest wiring required for any model railroad. As long as you don't over think it. Like they say, "KISS!"