I can certainly comment on how that section works. I don't know that I have the background in terms of the intentionality behind the inclusion of that provision, but if it's useful, I can talk about what that provision and section 21 do.
Subsection 22(3) puts in place the legal doctrine of federal power paramountcy. Basically, it provides that provisions of a federal law will prevail over a provincial law. The combination of section 21 and subsection 22(3) means that indigenous laws become incorporated as federal laws under the act. Through that incorporation and reference process, those indigenous laws are paramount over provincial laws if there is a conflict or a situation of inconsistency. It's a significant provision in terms of ensuring that those laws are paramount over the provincial laws that could be inconsistent.