Yes the Hereditary Chiefs claim authority and sovereignty over much of BC including Vancouver and also Toronto Islands and parts of Mississauga and indeed likely all of Canada. But they do not have an army or military means to back this up do they ? The First Nations communities in Canada are welfare states coddled by the Federal Government for the most part for better or worse. So what is your point and how is this relevant in 2020 ? The First Nations groups have found an effective leverage tool against an anemic minority federal government and are exploiting it. More emboldened protest are likely to arise from the current scene in the form of learned copy cat behaviour.You are not alone. It seems that there is a big gap in the general understanding of the whole thing.
1. The Chiefs that have signed on are elected Chiefs of local Bands on formal Reserve's. Their "authority" relates to specific Reserves that were created through individual Treaties and the Indian Act.
2. The Hereditary Chiefs claim authority over a much larger area of B.C. that was never "ceded" to the Crown under the Royal Proclamation of 1763 as British Columbia was not settled by the British at the time of the Proclamation.
"the Royal Proclamation explicitly states that Aboriginal title has existed and continues to exist, and that all land would be considered Aboriginal land until ceded by treaty. "
2. The Hereditary Chiefs claim authority over a much larger area of B.C. that was never "ceded" to the Crown under the Royal Proclamation of 1763 as British Columbia was not settled by the British at the time of the Proclamation.