I’m pretty sure it did: CFCs are ridiculously good refrigerants, propellants, etc. Entire supply chains had to be re-rolled around replacements. But the point

I’m pretty sure it did: CFCs are ridiculously good refrigerants, propellants, etc. Entire supply chains had to be re-rolled around replacements. But the point wasn’t to argue that the scope of the Montreal Protocol is comparable to the scope of the Kyoto Protocol or other international CO2 reduction plans. It was solely to point out that Western countries have contributed meaningfully to global climate protections; shrugging everything off as China’s responsibility is neither sensible nor historically accurate.