People won't go for being shamed into reduced wealth, especially when the shaming is coming from comparatively rich people. Try to force it on them and you will get a populist revolt.
So by all means keep preaching 70s style lifestyle shaming environmentalism if you want another 50 years that looks identical to the last 50 years. People will listen, nod, and ignore, just like they do with sexual moralism.
The answer is to replace fossil fuels with solar, wind, nuclear, etc. and to electrify transport and industry. Replace as in generate the same or even more energy. As I say this I live in a place where as much as 50% of my power is solar on some days and I drive an EV. We are close to cracking the storage problem with better batteries and scaling production of them. This is very possible.
Sort of like how you cut STDs and unwanted pregnancies by making contraception available and guys putting rubber things on their willies. It's what works. Only ideologues oppose it.