For what it's worth I don't think they're proposing it will "solve" climate change - no single thing can. It's millions of tiny (alleged) improvements like this which eventually add up to taking pressure off of the environment. I see this kind of attitude a lot with stuff like paper straws or biodegradable packaging, as if the idea of a small but meaningful step in the right direction is laughable. It's fine to criticize them for the "improvement" actually being no better than the alternative, but I worry sometimes it comes across like any sort of improvement short of "solving" climate change isn't worthwhile.