I guess the boomers were just the era where this all started, but only a small portion of the population could afford to live that. We got to a point where more and more could afford to spend and it was unsustainable. Now people don't want to give up their aircon (I certainly don't right now! 45°C and climbing).
I don't like to see a generation blamed when it's only really a small percentage who live that way. In many ways, it's the millennials and gen Zs who have gotten used to a comfortable life which most boomers never had and would struggle to give up their mod cons. Perhaps we gen Xs are more to blame for giving them what we never had growing up and now they take it for granted.