>You can advocate for sustainability, right-to-repair, privacy etc. while being strongly capitalist just fine.
you really can't. I mean I get the point that maybe anarchism or feminism are more contingent when it comes to their idea of perma-computing, but you cannot advocate for radical ecology and long-lived computing under the logic of capital.
The entire point of capitalism is to constantly shove new things into your face, that's how you get fast fashion, new phones, more energy consumption, capital reproducing itself. You won't get a computer that runs a thousand years on a solar panel so to speak under the logic of the market economy.
I think intersectionality goes a bit too far sometimes but the degrowth aspect is central to what they're advocating, and there's no degrowth capitalism. See also Kohei Saito's book on the topic (https://en.wikipedia.org/wiki/Capital_in_the_Anthropocene)