No, that’s not being “that” person at all! What IS being “that” person is being all overly offended at someone else’s pronunciation, so before I answer I’ll just remind y’all that these are fictional characters, there’s no right way to pronounce them, I don’t care if you have a master’s degree in Etymology and/or Linguistics, named your pet/child after them, have a friend with the same name, even if you are the creator of the series, anyone is free to pronounce these names however they want.
Amadeo- “ah-mah-DAY-oh” or “ah-MAD-eeyo,” I sorta use both.
Khayman- “Kay-men”
Mekare- “mee-CARE” or “mek-ARRAY,” personally, I prefer the first option.
Maharet- “maha-RET” (emphasis on the last syllable like “Margaret”), or “MAH-harret” (emphasis on the first syllable), or “muh-HAH-ret” (emphasis on the second syllable). Personally, I prefer the last option.
(redhairedtwin may disagree with me on the twins, she can add her two cents if she wants to do so.)
BONUS… hit the jump.
Marius- “MAH-reeyus” or “MARE-eeyus,” I tend to prefer the second option.
Lestat- Despite AR’s explicit instructions that it be pronounced “Less-DOT” with emphasis on the second syllable, I can’t do that, it sounds too clunky for me. I think it’s more like “Less-TAT,” second syllable like “cat,” or “Less-STAH,” as in “star” without the “r.“ I prefer the “cat” version. More discussion on his name here.
Louis- “Loo-WEE.” takemetocoffin-or-losemeforever helpfully recorded the pronunciation of his name in full.