Supposedly eco-friendly cups are still coated with a thin layer of plastic, which scientists have discovered can leach chemicals that harm living creatures.
Disclosure is nice, but it probably won’t change the outcome. As long as things are disposable and cheaper, those things will be used. As always money talks. Instead taxes related to expected lifetime (one use only should be really expensive) and environmental impact (that one is probably impossible to realize) might actually help, but yeah, that in itself cannot be realized without knowing composition.
Disclosure is nice, but it probably won’t change the outcome. As long as things are disposable and cheaper, those things will be used. As always money talks. Instead taxes related to expected lifetime (one use only should be really expensive) and environmental impact (that one is probably impossible to realize) might actually help, but yeah, that in itself cannot be realized without knowing composition.