I've done my research and have read about the Bloc and its concern with the Constitution. We have to acknowledge that inherent rights and treaty rights preceded the Constitution and are contained in there. There are also a number of court cases that affirm first nations treaty rights and title and aboriginal rights and title, so I think it's incumbent on the legislators to ensure that these aspects be included in the bill.
On February 2nd, 2021. See this statement in context.