Turns out, because the 7100x number is based on a misunderstanding of the study it's from, and the actual number for climate impact is 52x: https://news.ycombinator.com/item?id=20581751
I was wondering about that, so thank you for the clarification.
The other issue I had with it was that plastic bags are notorious for ending up in hedgerows and waterways, so there is that secondary impact from being a disposable item, which cotton or hemp bags don't have so much.
The other issue I had with it was that plastic bags are notorious for ending up in hedgerows and waterways, so there is that secondary impact from being a disposable item, which cotton or hemp bags don't have so much.