PEI has it own unique culture. Newfoundland and Nova Scotia too. So does Acadia, Quebec, Northern Ontario (even middle Ontario, by which I mean northern south Ontario), Alberta, Manitoba, Sakatchewan and BC. Cape Breton, etc. etc. The problem is, these are regional, or even worse, local cultures. Canada has no positive unifying and self identifying national culture, nor does Toronto and southern Ontario really have their own unique culture.
It's still a big ol'PEI. Only difference is the Doultz in Nova Scotia is cheaper, and maybe a tad better, but I'd have to test quite a lot of it to see.