Can Canadian air travellers get home using public transit with new rules for on-arrival COVID tests? (Dec 2021)

In response to the emerging omicron variant of COVID-19, Canada recently announced that incoming air travellers will be required to take a COVID-19 test on arrival and then self-isolate until they receive results of the test.

The guidance for self-isolation suggests that use of public transportation is prohibited.

Getting to your place of isolation (final destination)

• Do not use public transportation (e.g. aircraft, bus, train, subway, taxi or ride-sharing service) to get to your place of isolation.

What does this mean for fully-vaccinated Canadian citizens who took public transportation (bus, train, or taxi) to the airport and don't have a car parked at the airport to drive home in? Does not having access to a private car mean that returning travellers will need to stay in a quarantine hotel?