I responded to a sibling comment, but basically I think that study sort of misses the point. The reason to move away from plastic bags is due to plastic waste and microplastics, and the study doesn't touch on that really at all. Their analysis is based on stuff like ozone depletion, eutrophication, resource depletion, and other things that just aren't really meaningfully impacted by shopping bag material choice.

I don't think it's FUD exactly, I think it's just a bit of a weird analysis that focuses on the wrong things.