I don't see any reason why to be so harsh on him, or request ban, or closing the topic, etc... whatever, he can believe anything he can.
Actually he may even experience something "different" by feel, I can for example imagine he did tune the sounds in older version a bit, and maybe he's driving so much "by sound", that he does push over with default R sound, etc... In a world of software there are many weird things happening from time to time.
But what should be easy to verify is, that the same input leads to the same output. Looks like he doesn't want to accept even that, not sure why he doesn't try with replays. Maybe watching replay in R would even give him clue, what feels different.
Should I be bothered, angry or call for a ban? For this? It's funny. Let him be, he's amusing, and doesn't deserve this hostile tone.
And there may be some subtle real reason why he's giving R different inputs. Although it may easily be also just placebo, it's powerful thing, if you believe into something.