Canada straight up doesn't have a culture anymore, due to Canada being a "post-national state" and the Quiet Revolution destroying most of french canadian culture outside the language. So there's nothing holding Alberta down culturally. By default alberta will have more of a culture than the rest of Canada, even if it was really only "gas and oil". Still unlikely for Independence to happen for the foreseeable future, but it would be funny if we somehow did gain independence in the next few years, and even more so, if we miraculously remained independent instead of joining the USA.
Also like one of the comments of the video said, no one took Brexit or Trump in 2016 seriously either. Regardless of what you think of Brexit or Trump's presidency, the point is that movements people believed would never come close to succeeding did, even if not everything went well for post Brexit Britain or Trump's first term.
Western alienation has been around since at least Trudeau sr (who also alienated Quebec). So it isn't a "fad" like some people claim, but I do agree the last decade of liberal extremism did factor into that. Would the CPC winning this year lowed tensions, yes, but like many of you guys know by now, most of Canada's issues are terminally and have been affecting Canada for decades now, even if they weren't as severe until 2015.
Lets say Pierre became PM with a slight majority this year, and everything miraculously goes well for him and the country. The country's institutions are like Venezuela's, weak and corrupt despite the country's enormous potential. Due to the lack of checks and balances within the political system, it would only take another hard leftist leader like Trudeau for everything to go back to square one.