No duh, because not a single country has made any real attempt to lower their citizens' emissions.
It will take sacrifice from all of us to stop warming.
Forget 1.5°C, honestly, forget 2°C as well, keeping it under 3°C is likely the best that we can hope for right now. You're needing to throw out our gas-based car infrastructure, reduce our reliance on jets as much as possible, lower not just meat consumption but also almonds/alfalfa/etc., and that is just to get started.
Really, I don't see the average voter letting that happen. What's going to happen is eventually, sometime 30-40 years from now, a heat wave is gonna thrash the Middle East, consistent 130°F days for a solid month, 100,000 people dead, and the very next year planes will be in the air, making clouds to block the sun.
We are not ready to give up the things that the developed world will have to give up to truly back away from this coming apocalypse.