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Yes, but the question is, how much of these emissions come from the basics, and how much from extravagance?

The question is how do you define extravagance? Ask someone in a middle class suburb of the US and you will get a different answer than the most of the rest of the world.

The biggest extravagance is space. Having space (I.e. detached houses) has a knock on effect of increased emissions of everything. Increased energy usage to transport mass increased distance.

Clothes industry has long stopped being about clothing and moved to stroking egos instead (infinite stream of money in that). It is even reflected in the name change ("clothing" -> "fashion").

Transportation and heating are in there as well