I just think that it’s unfair to bash the entire province for the views of a minority that’s so small that they make Quebecan separatism feel like they’re only an election away from a super majority.

I think the intent here is not to bash anyone, let alone the collective on its entirety. You can read “Alberta is a threat to Canadian unity” more as “Alberta’s Government is a threat to Canadian unity”. And if next election cycle the people of Alberta decides to re-elect Danielle Smith, then you’ll have your awaited answer on whether albertans themselves, as a collective, are also a threat to Canadian unity.