> ...better environmental choice than plastic

I think "better" is very subjective here. If we're talking the energy and water to make it, sure. But that probably pales into comparison compared to the produce you'll be putting in those bags anyway.

With all we know about plastic in the environment now, and how ineffective recycling as a strategy is, I think anything that will harmlessly biodegrade in a reasonable amount of time is a better choice than plastic.