Pronunciation of words is decided by consensus - and while of course people mispronounce things, what that means is, they pronounce it differently from the accepted cultural norm.

We don't get all in a knot because Americans prove things differently from British people - even though they originally set the rules for English. And we don't pronounce things the way we do because George Washington (being analogous to wilhite (or whatever his name was)) told us to; we pronounce things as we do because of cultural consensus.

Wilhite's intention was literally to use the name recognition of the peanut butter to further his own success - which, like, who cares - but the simple fact that he made that decision (and to be clear, regardless of our opinion on copyright, is a bad way to make the decision) strongly implies that he was aware that his pronunciation was unnatural.

The fact that this conversation even comes up is proof that culturally we reject wilhite's pronunciation. It's a lost battle - the only reason I get involved in these threads is because I have a hard time watching the same 3 talking points (on both sides) and the same 3 rebuttals - all of which attempt seem to use facts and logic to determine "correct" pronunciation - when the truth is, the pronunciation has already been decided, and soft-G pronounces deserve to understand it.