Right. I wrote that in the context of the linked article. So don't think of this scheme as a reasonably efficient way of saving CO2 emissions (there are other

Right. I wrote that in the context of the linked article. So don't think of this scheme as a reasonably efficient way of saving CO2 emissions (there are other much more economically efficient ways); at most it's a bonus. It follows that it doesn't make sense to justify the scheme on the CO2 emissions benefit. I've seen a lot of that on European subreddits.