No one is attacking the production of oil. Alberta can produce as much as it wants. It can't impose dangerous pipelines on other provinces regardless of who owns the oil companies.
..the movements are more ambitious. like the treaty alliance, the leap and many others. the object is to first stop the expansion of the tar sands and eventually end it as it is today.
That may be so but the arguments defeating pipelines like EE and Trans Mountain are rooted in local concerns not shutting down the oil sands. The indigenous court cases are about the threat of pipelines to indigenous water and lands not shutting down the oil sands. I know of no movements trying to close existing pipelines being used for oil only preventing new ones. The oil sands will be exploited until they are no longer profitable.
..local concerns also includes climate change which shows up in poll after poll. local concerns includes the implementation of undrip and we see this in the local alliances made with indigenous folk. we see this with the massive financial support for indigenous court cases. the tars sands is in violation of undrip. you may believe that folks don't understand the connections but they do. local concerns include the politics of power. they understand the 99% vs 1%. you only have to go to an organizational meeting or demo to see this. it's not a secret agenda drummed up in back rooms.