How will a society without growth be flourishing?
A lot of people make the mistake of thinking that economic growth requires an increase in natural resource use, pollution and waste, when a lot of economic growth in recent decades has come from increased efficiency and services that have not led to more natural resource extraction.
The idea of humanity without a desire for progress and growth is romanticized by environmentalists and parts of an "intellectual elite", when in reality it will lead to a complete collapse of society and standards of living.
I like the coca cola aluminium can example - if coca cola can reduce the aluminium used in it's cans, that means less natural resources used. But it also means more profit for them, as a better design means less material but they can sell it for the same amount.
This actually translates into better productivity and economic growth. Multiply this by a million, and you get economic growth from a more efficient economy.
Economic growth != more natural resources used. It means more wealth for humans, which is a complex thing. it can both mean more natural resources used, or it can mean more efficient usage of existing materials.