Yes, however if that were a problem in the scenario above, I'm pretty sure LLMs could fix that as well.
They're already very good at translation today, it stands to reason that they could do the needful when it comes to turning regional English into American English. Or Bri'ish English, if that's the accent you want your TTS model to have.
Not really. If they say "kindly do something", they are Indian scammers.