I had no idea how to pronounce "Maori". I googled it and found out so I guess I'm no longer an idiot. But then, I retired in Texas and moved to Arkansas and became a hick so maybe knowing the correct pronunciation of "Maori" isn't enough.
By the way, in Melvyn Bragg's BBC TV series "The Adventure of English" he explains that the variant of English that's changed the least in the past 400 years is that in the southern states of the USA. So if you want to know how to correctly pronounce anything in English feel free to ask me.
Barry