There could be any emergency and one has to leave country. As far as you dont want to reentry based on stamped CoPR....Only need to get a monthly rental (will be staying for 15 days anyways) and then say yes we plan to settle. There is no way they can prevent us going back after 14 days. Once landing is done.....PR card will be shipped to Canadian address.
"Please note that only approved permanent residents now able to live and settle in Canada will be allowed into the country at this time due to the ongoing travel restrictions. Travel for temporary stay for reasons such as tourism, entertainment or simply to finalize applications without staying in the country is not allowed and will not be permitted"