I typed imprecisely it turns out. Forever chemicals, not plastics, although some plastics are forever chemicals. Switched in my brain.

https://enveurope.springeropen.com/articles/10.1186/s12302-023-00721-8

The EU is diverging from the USA on refrigerants, going down especially the propane aka R290, and likely banning HFOs because of the PFAS concern. The USA, on the other hand, is establishing a mandate for HFOs. That's bad for the global heat pump market, and not actually good for climate change either.

The market being split with different devices and refrigerants in North America and Europe will reduce economies of scales for global suppliers, increasing overall costs of the transition.

And the HFOs the USA is settling on are merely not as bad as current HFCs, but still quite high in terms of global warming potential.