I didn't say it would be comfortable. But most "climate-friendly" policies already affect consumers (and often much more so than they affect industry, making them entirely pointless).
Keep in mind capitalism not only means producing excess junk. It also means producing unnecessary excess junk: overproduction and shredding/landfilling the surplus because selling it would harm the desired price point or create unwanted market dynamics (i.e. people waiting to buy at a discount later).
"Modern housing" often means tearing down existing McMansions in order to build new ones on top of them. "Choice over what we eat" often means importing produce that would be available locally but is currently out of season, or producing ready-to-eat meals only to throw them out at the end of the day, always stocking hundreds of an item in dozens of variations just to give an illusion of choice, etc etc.
And that's only the immediately obvious harm of "consumerism". Industry also means shipping parts around half the world to process them with cheap labor, then ship them all the way back so you can add a sticker to the finished product saying it was "made" locally. And with "just in time" production this means repeating that process dozens, hundreds and thousands of times with individual packaging, repackaging, shrinkwrapping, unwrapping, loading and unloading -- a simple cardboard box can end up going through three different factories (being itself unpackaged and repackaged at every new location) before being thrown out after a single use for, again, transport of other goods.
Recycling and renewable energy are bandaids. The current production levels are unsustainable, especially if we seek to lift the developing world out of poverty to similar levels of comfort as the average person in the West.
Sure, it'll suck for the average person and society and economy will have to change drastically. But it'll suck even more for the billionaires because their very existence is subject to maintaining the current status quo.
We can't sustain the "consumerist excess" of the middle class, but we certainly can't sustain that of the very rich. And they know this, which is why they would rather let "the Event" happen rather than give up their luxuries and join the rest. Because even if they have to protect their rusting food bunkers with armed slaves wearing shock collars, at least they'll still be better off than the rest.