I wonder if the people that believe that would be willing to give up their fridge, air conditioner, car, jets, etc to show us the way. In about 300 years, we can review the data and see if we still say no to these idiotic ideas.
Take it easy Francis no one is going to give up AC or freezers. HFC are already banned and the phase out has begun as with any transition there is going to be alternatives in this case R600,R290,R744,R152,R1234y just to name the ones off the top of my head that all have GWP under the limits of the treaty which the USA has not even sent to the Senate yet but the EPA is abiding by it in force.
R600 is presently keeping my game freezer at -15 and my second garage freezer minus 14 no big deal and with a GWP of zero R600 is perfectly legal and cheap too. Most new cars after 2020 in the US use R1234y already the price is coming down now that mass production is ramping up for it at one point it was $120 lb it’s half that today and given it’s more efficient in the cars AC there is less of it in the system. It runs at a different pressure curve than R134a so back fitting the old stuff won’t work in a new car. R1234yf is here to stay.