To be honest, I strongly disagree. Most people in the US pronounce them all the same (
Erin,
Aaron,
Aron). I also don't see why
Aron and
Aaron should be pronounced differently at all and uh-RONE is a pronunciation that isn't used it any country as far as I'm aware, it's just plain wrong.
Aron and
Aaron are either AIR-uhn (US) or AH-ron (non-English speaking countries) and maybe AHR-uhn (England, Australia), but never uh-RONE.
They are the same biblical name, just like Hannah/Hanna and should be pronounced the same even though pronunciations differ depending on where you are-