He's not wrong. It also was not successful. The idea behind carbon tax (first proposed by Harper and Poilievre) is that a levy would incentivize people to burn less. Didn't work, large truck and pickup sales doubled, air travel increased. People just pay to burn.
We should have put in laws to limit vehicle size and fuel economy, not leave it up to consumer fashion. Just roll in a ban of ICE vehicles in large urban areas.
Taxing carbon doesn't work. We need to restrict activity.