"astronomical cancer risk"

According to new studies, the production of "biofuels" from plastic by pyrolysis is extremely harmful to the environment - even on an industrial scale. I don't even like to imagine how great the health hazard is for the hobbyist and his environment during the amateur pyrolysis described above. see: https://www.theguardian.com/environment/2023/feb/23/climate-friendly-us-program-plastics-fuel-cancer