I'm not an expert on tax, so please let me know if you don't feel this sufficiently answers the question.
I would say that certainly the concept of the tax treatment agreement captured here is not in any way intended to capture individuals' taxation. It's purely the taxation of the governing entity. The treaty, once negotiated, will include a few different pieces, one of which is this tax treatment agreement. Another is the funding arrangement between the Government of Canada and the Métis partners, the Métis governments. A third piece is an implementation plan for the ongoing implementation of the agreements.
I think this tax treatment agreement is a companion piece to the funding arrangement, in a way, to ensure that these Métis governments get the same tax treatment as other governments under general tax laws. However, MP Idlout, I'm not personally familiar with the tax terms around the Métis settlements.