People of aboriginal heritage in Canada do not 'live off the land' as their ancestors did in neolithic conditions. Other than for some very specific activities like seal hunting etc.
"the kind of society and life that Native Indians dream of"
?? They definitely are not dreaming of this.
Or not in any different way that we often dream of maybe 'going fully organic / off the grid' - but we don't because we have regular jobs..
'What they want' is complicated. Definitely they want 'treaty rights' respected, but those are vague. They want certain municipal services (i.e. water) but it's really spotty - some places, water facilities are made for them, but they won't do the upkeep. In other very remote communities, it's exceedingly expensive. In others, private mining companies have polluted the water (the answer here should be easy though - the mining companies pay to fix the dam problem they created). There's also the problem of taxation and cost - my father pays $180/month for water for his tiny little flat in a small town because they live in a remote area. Municipalities, via taxes, pay for water treatment. So the question arises as to 'who the Federal/Provincial Government' will pay for, and who they will not.
There are very complicated band structures where by some band leadership positions are inherited and come with legal powers.
Some hereditary band leaders in BC who've maintained their 'titles' for centuries and who hold all of the power but have no support from the band members, and there's no democratic input, may decide to be 'against' a pipeline or some such thing - even as basically entire band/community themselves is 'for' it. The Canadian government is in a weird position they are forced to recognized the hereditary titles of the chiefs - which is democratically anathemic of course.
And it goes on like this. It's complicated.