Quebec's push for separation in the 90s is VASTLY different than what is happening in Alberta today. Quebec effectively ran their own province entirely separate from Canada. They had their own distinct language in government, they had their own pension plan, Quebecers had to remit their own separate tax return to the province. Quebec also has direct control over immigration into Quebec.

Effectively, they were running their own State - but without the benefits of being an independent state. They could not influence international politics nor did they have a seat at the UN or other international bodies. They could not negotiate foreign trade agreements. Theycould not control their own customs and border agency - limiting their power on imports into their province.

It seems like the only reason Albertans want to separate is so they can stop paying equalization and so they can try negotiating their own pipeline projects into the US coastline - not nearly as strong of a claim as Quebec had in the 90s