I think you misread my comment. It was not about need but about incentives. Specifically that changing inflation doesn't change incentives. And removing growth from an economy is far more expensive way to prevent climate change than something like a carbon tax.

If you are arguing the easiest fix to climate change is to convince everyone to stop being interested in increasing their material wealth. That seems like a hell of an uphill battle. Orders of magnitude harder than passing a really high carbon tax.

P.S. getting rich is usually not the terminal goal, but a means to financial security for the middle class, and status for the upper class.