Ryan Cleary is not a separatist

Labrador caller David challenges the presumptuousness of Newfoundland separatists to speak for him when they talk about separating from Canada.

Radio host Ryan Cleary, who is not a separatist, counters David with:

What, you're not a Newfoundlander and Labradorian?

Puzzlement ensues.

Does this mean that in order to be a Newfoundlander and Labradorian you have to be a separatist?