The other thing is: consumerism must go, but it's no easy feat. So many people in 1st world countries work in jobs that make zero sense in a post-consumerist society. Advertising is a huge industry. Even many tech giants like the FAANGs would become largely superfluous. There will have to be a gentle transition, not a "drastic" one, or 2019 politics will end up looking like a fairytale in hindsight.
A large part of this is due to current practices surrounding energy and material goods production though, as you point out.
For example, the UK has an intensity of approx 300g CO2 emitted per kWh on the national grid. We also have diesel trains. A lot of the material goods we produce (including things like, say, the metal body of said trains) are carbon intensive in their manufacture.
But it's not impossible to change that.
I live in France, electricity isn't too dirty to produce (nuclear), and I can't say I abuse it, I don't heat a lot, I like to sleep in the cold, maybe 3 months a year, and I have no air-conditioning of course, this is a nonsense.
I use a bike for everything, so my main CO2 footprint might be from the vegetables/fruits I buy, they are still quite locally produced (France/Spain/Italy/Morocco for clementines sometimes) (I mean I wouldn't buy a pineapple/mango from another continent, this too is an absolute nonsense)
I love diversity: that's why I think we should stop trying to destroy it.
Calling such behavior "forced" is so inconsiderate. It blows my mind that you are trying to blame people for trying to find better lives. Should a lady in a brazilian favela not have washing machines? Should people not experience and use electric light or air travel? I also assume you are from the west which makes your position extremely arrogant as well.
I am very afraid of what the environmentalist movenment is turning into and would not be surprised to see major violent eco-terrorist events in the future. Makes me ashamed to support green policies.
So inconsiderate.