All that stuff you mentioned is derived from a core set of principles established by decades of software best practices applied to a new means of generating code. Like quite literally those instruction files/skills essentially just reiterate the practices themselves.

To your last paragraph, I never say that nor do I imply it. I find that as a pretty disingenuous interpretation of what I said actually. The practices I mentioned were derived from hard learned lessons and designed as a means of mitigating the human tendency to write bad code.

They were not, but they were outputting code at a pace that was reasonable to review. Now they go straight to prod, 10x faster.