Hmm, I just read an article on chemical recycling that had a very negative take:

The Delusion of Advanced Plastic Recycling Using Pyrolysis — ProPublica (Jun 2024) https://forum.humanmicrobiome.info/threads/the-delusion-of-advanced-plastic-recycling-using-pyrolysis-propublica.441/

But I don’t see Pyrolysis mentioned so perhaps this different method doesn’t have the same problems.