Broadly, I agree with your comment. I have seen a few experimental plastic drink bottles that claim to have a minimum percent produced from plants. It is a little bit insane to imagine the amount of chemical and energy gymnastics required to make plastic bottles from plants, but, hey, the big drinks companies are desparate not to lose PET bottles. To be clear: I am not defending this type of plastic! I am only pointing out that it does exist.

    > That conveniently ignores the drilling, extracting, transporting, refining, and transporting again to make "polyethylene resin".

Somewhat adjacent, in many rich countries, in the last 10 years there has been a big push to remove plastic drink straws. I think it might have worked. Initially, the designs and performance of wax coated paper straws were pretty terrible, but chemists and material scientists have been working hard to improve the product. I feel like paper-ish drink straws are here to stay.