Using energy doesn't cause climate change. Producing energy from fossil fuels causes climate change. Humans don't need to minimise energy usage to fight climate change, instead they need to produce energy from non fossil sources. I wish we produced 10x energy that we do now but from renewable sources.
You're right, in the most meaningless sense of the word. I too wish we had 10x the energy from renewable sources, but we don't and won't for the foreseeable future. What we actually can do is get maybe 1/10 of our energy from renewable sources and then, to be sustainable, we need to use 1/10 of the energy we currently use.
Do you disagree that humans need to minimise waste in order to fight climate change?