What lore do you ignore?

[Turnintino]

Along similar lines, try getting a person with an accent where they say Mare-eeo to play Super Mario 64, and even with Mario literally yelling "ITS-A-ME, MAH-RIO!" on the startup screen; they'll still turn around and five minutes later say "yeah mare-eeo 64 is a great game!"

Lmao absolutely. I said earlier that I think most of us are familiar with that kind of thing irl. And in the case of "yeh" or "yuh" versus "yah", the discrepancy is so minor that only the most pedantic of nerds would take real issue with it. And that's also indisputably an accent thing, like you said. The "ish" pronunciation feels like a bigger stretch to me. But back to what I keep saying about internal consistency, I could more easily accept it if it were the one pronunciation that we heard across the board, even if I still think it's the furthest from the localization's original intent.