The premise for the linked paper, "The Post-Scarcity World of 2050-2075", that "This convergence of peaking production is likely to lead to an age of scarcity. And yet that age of scarcity is unlikely to herald the end of the world. So what lies beyond scarcity?" makes no sense to me, although I have yet to read the whole paper.
Like, yes, we are depleting the Earth of its resources, leading to scarcity, but then that will end because the Earth will be out of resources, therefore we are post-scarcity and everything is free or nearly so? No sense whatsoever.
I think I can guess what the paper is about, that technology is going to develop that will save us from exhausting resources, but we're already inching pretty damn close to various tipping points that will lead to some really terrible things happening with various ecosystems and things are going to have to get a whole lot worse (and a lot of people are going to die) before we even can attempt to go back to some sort of eventual equilibrium. And tech is nowhere close enough to saving us from a good chunk of it.
So yeah, I guess there could be a 'Post-Scarcity World', but only for the fraction of life that will survive to see it (maybe none of that life being human at the rate things are going).