I see a big difference in mocking the policy vs mocking the people proposing it or the reason they're doing it. "Greenwashing" as I understand it is the act of doing something that doesn't help or helps the environment very little, but makes it look like you care and are trying to help it. This is a description of the person and process, not as much the policy itself.
I think most people would agree this is a weak policy and clearly done because its low-effort, agreeable and doesn't harm their corporate overlords much. So I can't say calling out the politicians isn't in order, but the policy itself is not actually bad.
At least in my tiny corner of Europe, most of us in The Left (caps important) get this difference, but we do still have many idealists that don't, and they are usually the ones that get in the news. Maybe (I hope) it's the same over there.
// I don't have any translation software handy at the moment, so I couldn't read the article, sorry