> Without a focus on the supply side, all of our current consumption-focused climate change policies (carbon tax on consumption, electric vehicle mandates, most recently infrastructure issues etc.) effectively amount to weak virtue signaling that has mostly succeeded in dividing voters and provinces against each other

This is a very bad-faith read of what actually happened. There’s been decades of interest in the supply side, but this isn’t happening in isolation: the fossil fuel industry is massive and has enormous political clout, and they know that there’s no path to a better world which doesn’t involve the fossil fuel industry making trillions fewer dollars. That means that supply side improvements have both been prevented or steered in infeasible directions which conveniently mean fossil fuel consumption won’t drop in the slightest until decades in the future when something very hard finally happens (hydrogen, nuclear). Any time you’re about to repeat a right-wing trope about virtue signaling, know that you’re contributing your time and credibility to assist their propaganda campaign entirely pro bono instead of doing anything which could help.

Re: tar sands, nuclear takes too long to construct and if you did get a plant through you’d want to use it to decarbonize usage directly rather than encourage more oil consumption.