However, a point that you obviously missed is that by being an NRA certified instructor does not mean he follows the guidelines.
I've seen all too much of that. I dealt with a guy a couple of years ago who was teaching First Steps, and he skipped the part showing students how to disassemble their guns. The reason? "YouTube has videos on that." That might explain why he was finishing the whole class in just over an hour.
We also had a local hunter-safety instructor who was using his time to lecture students on politics and give some atrocious (and legally erroneous) self-defense advice.
The NRA certification courses are pretty clear on what is to be taught, and how
it is to be taught, but that doesn't stop some folks from completely disregarding those factors once they're out in the wild.