I don't think the manufacturers of these parts and spark plugs even think about the rust belt when they publish this crap.
Every single time someone ask about anti seize on spark plugs it is inevitable some yoyo is quick to post "NGK does not recommend it",
My answer to that is let the touchhole from NGK who wrote that crap come and get these out. Like the ones with the NGK coating had them break off in the head the guy posted about a couple of months ago.
Ditto CV axle in hub splines, I have used a thin coat of never seize or water proof grease (usually Mobil 1 red) on every single one and never seize on every plug for over 50 years and never had a problem.