Proper Grounding.

[sunshine_eggo]

Ok, I'll throw one out for fun. UFER ground. It throws a wrench in the "one ground rod" comments. Have fun. (I don't feel the need to share my credentials since, as you say, the NEC and facts stand on their own)

You come into a thread and criticize with no meaningful input.
You pose a "challenge" for "fun."
You allude to possessing but don't support any expertise.

This is a DIY solar forum where people come to learn. Your presence doesn't seem to be consistent with that. Why are you here?