Perhaps you are right in principle, but I think advocating for degrowth is entirely hopeless. 99% of people will simply not chose to decrease their energy usage if it lowers their quality of life even a bit (including things you might consider luxuries, not necessities). We also tend to have wars and any idea of degrowth goes out of the window the moment there is a foreign military threat with an ideology that is not limited by such ways of thinking.

The only realistic way forward is trying to make energy generation greener (renewables, nuclear, better efficiency), not fighting to decrease human consumption.