> I am actually not convinced either way. Some people believe it is so expensive it will necessitate degrowth, while others think that so much economic change will almost certainly spur economic growth. Either way I think that people who push the degrowth narrative are further reinforcing the view that climate action is too costly. Nonetheless it could be that they are right.

Whatever your view on that is, it doesn't really matter because the costs if climate change goes unchecked are going to be catastrophically high - direct in terms of e.g. having to rebuild burned down/flooded/etc. areas, more electricity for AC, etc. or indirect such as having to accommodate mass migration from climate refugees.