The intent was to use the quarantine system that existed and not to create yet another system for Canadians, and another set of lists and rules on quarantine for decision-makers, when the public had become used to this system and understood they had to quarantine.
If you have to quarantine, if you're ordered to quarantine upon re-entry into Canada, you will not, unless you meet one of the exemptions you mentioned at the beginning, be eligible for these benefits for two weeks.