Pronunciation snobs are present in every language as are the grammar and spelling police. They are a tiresome bunch that is for sure.
That is true. But they do seem to be hypersensitive in Te Reo and that hypersensitivity is incompatible with Te Reo's status as an official language.
They are very active in France.
Even in the Maori culture we have our own pronunciation/word use biggots but that is usually just banter between the different Te Reo dialects around the country which are getting phased out by the modern way Te Reo is pronounced and used.