For what it's worth....
We have been enforcing the 2 rods or <25 ohms for a while. You get the occasionsl argument from an EC, but my usual response is
Ground rod testing equipment is about $2000.00. You probably need a day to familiarize yourself with the gear, and some time to perform the test.
A second rod, clamp, wire, is about $20.00
Make it a financial decision.
PS: NJ interpertation of "let the AHJ test it, and prove it's NG" does not fly. The proof of test results is upon the installer, be it the homeowner or the EC.