It isn’t a bad idea, but it isn’t a good one either. Alberta will need a thousand new pension workers and it is pure duplication and waste — something conservatives are usually against.
The entire proposal has two reasons: one defunct and one separatist.
The first was a very conservative proposal: the CPP wasn’t funded and was predicted to go bankrupt without major reforms. In the late 90s contribution rates were raised and the plan was funded.
The other is that to prepare as an independent state we need to build state institutions. One which is a reasonable underpinning is a pension as it requires much of the same infrastructure as a tax system (or at least it did in the 90s—the tax collection arrangements and infrastructure was modernized in the late 90s and this was fixed, and provinces can set their own unique tax rates now).
I guess a third is the conspiracy case. It is a belief that the CPP investment board has shunned or will shun the oil and gas industry due to spite, ESG (environmental, social, and corporate governance standards) which isn’t true — CPP is overweight on Alberta and energy, Or will shun due to the world economic forum.