It depends on whether you subscribe to the progressive ideology that people should be encouraged to do things that we see as good for them. For the record, I do. But if we decide that we want a society where more people make the uninformed decision to buy a gas-powered car or a diesel generator because it's understood to be a social good then that's fine. That's precisely what that tool is meant to be used for.

Whether or not we can imagine a world where buying a gasoline-powered car or private telecom is considered a social good is less of an issue than whether we want to be able to incentivize those things should they become necessary.