Okay, true, but a lot of us are okay with being a little less well off if it means having a planet to live on.
The problem is, with a few exceptions, everyone knows it has nothing to do with the planet. The pipelines Canada proposes might actually help. The effect on AGW would be negligible, and our product is better regulated than just about any other. The stuff goes by rail, and we know where that can lead. What it's about, mainly, is pettiness. Most of those in BC would either like to stick it to Alberta, stick it to big business, or just get photographed lying down in front of a bulldozer while wearing a woolly hat and carrying a copy of the Georgia Straight.
If they wanted a planet to live on they wouldn't export coal, build LNG plants or flood large swathes of it.