I am to understand that most environmentalists want fossil fuel to become a thing of the past.
Yes, that's true, though technically energy from combustion wouldn't need to go to zero to stop the human component from growing. Really, it depends on who you ask though, for how and when and all the actual important details. Sure, you might get some extreme folks that think it should happen like turning out a switch and all fossil fuel use should stop now. Others might take a more pragmatic approach, like when it's feasible to do so- having a National strategy for instance that would recognize Northern communities would have different challenges than say Victoria BC- and want to see more investments in technology that makes energy use more efficient, or disruptive technology that can displace other forms.
There's a pretty wide variety of opinions out there. Part of the problem as I see it, is that there actually aren't enough opinions, or rather some of those voices are dwarfed by larger mouthed folks. It would be better if there were more people with reach like Suzuki or Neil Young, giving alternative opinions on what could be done. Instead, the largest and loudest mouths argue about things like the thread title, so when it comes to discussions at high levels about what could be done, on things that actually matter- for example what to do in Northern communities- we have a lack of diversity on policy opinions even though there's plenty out there.
If you think about the types of things you hear from the policy side of things, like reducing use to some percentage of some level in some base year, like 30% below 1990 levels, or something like that, that gives us a total amount. Great, now how to do that? To me, it would make more sense to try to be as efficient with fossil fuels in places like Resolute, or Rankin Inlet as possible. Rather than saying they should turn the power off and use systems that can't work up there yet. So that would account for some portion of that total amount.
But when was the last time we heard stuff like that actually proposed and debated by key opinion leaders? Probably never.
Instead, we have musicians, journalists, and others arguing about stuff that scientists have largely moved on from. It's very unfortunate I think, because it's a huge waste of political capital. Environmentalists who won't listen to economics, and deniers who won't listen to sound science. We lose out on some important opinions there...