There have bene sweeping changes in the government and it's involved huge increase in powers. Specifically, Ministers can now make their own laws without a sunset clause. Sometimes you need to give governments more power in times of pandemics to enact change / decision making quicker. But this sounds like another abuse from the UCP govt.
This is the best explanation on it that i could find.
Ultimately, UCPs are doing what's best for themselves in the interim, knowing full well the legislation change would never would weight in the SCC.
https://ablawg.ca/2020/04/06/covid-19-and-retroactive-law-making-in-the-public-health-emergency-powers-amendment-act-alberta/