If the conversation is about Americans moving to China, and appealing to Chinese investors, to build their startup, tips regarding proper Chinese manners and Mandarin speaking techniques are appropriate. When it is about startups trying to make it big in the US, it is about English and the American "accent".

What PG said is completely clear (it is...ahum...without accent), and those who purposefully try to argue this point, invent equivocacies, etc, add no value to the conversation.