I mean the practicable reality is these goals folks set are optics, they aren't going to be met. I wondered when that would be so obvious it would become accepted generally. The first part of this is to report data and wring hands and say "WE HAVE TO DO MORE!!!!!!!!!!!!" and the second step is "Huh, we really can't do much more, so this is our situation, maybe we should step back a bit and think about our approach."
Germany really tried to hit this hard over the past decade, "Energiewiend" or however they spell it. The actual results for them is near catastrophic, for minimal reductions in CO2 generation, and they did about as much as anyone could do. It cost them heavily, for a very small "benefit".
Cost:benefit is important. Folks will slowly start to explain reality to folks instead of signing pointless ridiculous agreements thinking that was a something.