[ZeroGravitas]

I agree with your general premise.

10% of companies advertising that they use 100% green energy, while the other 90% of society uses 0% is no better than the government forcing 10% of all energy to be zero carbon.

Economist agree that carbon taxes work, but they work at every level not just the first time it's spent which amplifies the effect.

However, I think I disagree on two important things:

a) fixing climate change is the cheaper option. We're "doomed" only to the extent that system incentives drive us to do the wrong, more expensive thing

b) more info can only help that case, even at the margin.

Voting is the most powerful way for most people to act. Voting with your wallet helps too.