The problem is that absent technology we need to reach 0 carbon emissions. Not just what it was in 1950 or 1900 but actually 0. This implies a standard of living far worse than you suggest. And even at 0 it will take hundreds of years to undo current warming.
It’s not going to be politically feasible since 99% of people don’t want to live that way. Thus we have to pursue alternatives.
We are currently accelerating towards a cliff. We may not stop the car before the cliff, but the next best thing we can do is getting our legs off the pedal.
Maybe technology will help us achieve that last minute stop we so need, but we have to start somewhere.
It’s not going to be politically feasible since 99% of people don’t want to live that way. Thus we have to pursue alternatives.