There's also the entire equalization debate which Alberta is so fond of throwing in the rest of Canada's face.
For those non-Canadians, Canada has an "equalization" program which is essentially an attempt to "smooth out" tax income across the country, so the "have" provinces fund the "have not" provinces so Canadians across the country can have a similar standard of living and similar services.
Alberta, being the richest province, ends up paying way more equalization to the poorest provinces, mostly Quebec and the Maritimes. This is one of the significant factors of "western alienation", in that Albertans are continuously furious that their funds go to pay for Quebec's generous social systems. In fact, the Alberta government is holding a referendum next week on this (https://en.wikipedia.org/wiki/2021_Alberta_referendum).
Of course, bringing reality into the situation makes things look a little different, which is something that doesn't happen in the Canadian national discourse. Equalization is complicated, but there is no cheque written from Alberta to Quebec. Instead, the federal government pays Quebec its share of it from its own funds, mostly from federal income and sales taxes. The calculation of it is based on potential tax revenue. Alberta, being a province full of high income earners, has a very high potential tax revenue, so it is a "have" province and doesn't receive equalization. The idea is that provinces that can't raise their own revenue comparable to the other provinces get a break.
The issue is that Alberta has been chronically under taxing for years. It has no sales tax, it has the lowest by far income tax rates of the entire country. The system is designed for provinces to be responsible and raise their own revenue, and then get federal subsidies if that is not enough, but Alberta refuses to play that game. The Alberta government has been able to direct this rage to the federal government and Quebec though when the people really should be looking to their own provincial government instead.
This was really contentious following the oil busy in the mid 2010s. Alberta as a province was hurting, as a significant portion of its revenue came from oil royalties. However, since it refuses to raise taxes, it did not receive equalization payments despite being by all measures except the official ones a "have not" province.
A lot of Albertans are angry about pipelines and not being able to properly export their oil, as other posters have mentioned. Developing more infrastructure probably would be a good thing, especially when oil was cheap. Unfortunately, Canadian political discourse is not serious and its not possible to talk about serious, complex issues nationally.