I don't actually think it's a fundamental blocker though. People sacraficed quite a bit at home during WWII to support the war effort, we could make similar sacrifices now if we saw our impact on the planet as a similarly existential threat.
To me it seems like the failure is in trying to analyze the problem so specifically that we can define the "right" path then logic people onto it. That will never work, mainly because the problem is so complex that there won't be a complete understanding to share. There will always be assumptions used in modeling and holes in the data allowing for alternative explanations that are then argued over even further.
We all know that using oil at this scale isn't a great idea. And we all know that we could actually use less oil without giving up much at all. If we spent less time arguing over how we got here we could find reasonable next steps that are hard to argue with when it isn't all backed by "science" and "fact" that can be debated endlessly.