WS should be upgrading their 737Max's instead. They should be bringing up their safety standards up to AC level on the Max.
Transport Canada regulates the safety of airlines in Canada. It is not left to each airline to establish a safe benchmark. WestJet adheres to Transport Canada's regulations and requirements
Each airline may add different procedures to make their own standard operating practices unique, but end of the day, all airlines in Canada operate at a safe standard.