He also doesn't church cc's as he doesn't want to lower his score at all.
I don't know what it means to "church" a CC, but I'm assuming some autocorrect I can't figure out, but either way, I guess you mean he's not wanting to do something cause it' might temporarily hurt his score.
The thing is, there's no point in having a good credit score if you aren't going to utilize it. It's an asset, and if you leave it sitting there, you're wasting it.
Above 750 you get all the best rates. There's no difference between 760 and 850. A temporary drop from 850 to 800 in order to make money is a good thing. What is 850 getting him, besides bragging rights?
Is "had an 850 credit score" going on his tombstone? Is he expecting a medal from the president? Or is he passing up free money for literally no reason besides pride?
/shrug
YMMV.