Oh yeah, I’m not against UBI, with or without degrowth.
Now, the way I see it, the article starts with explaining why degrowth is necessary (sustainability), then focuses on what’s necessary to make degrowth practical (UBI). But degrowth as policy is only viable if we can measure its success, and GDP is not going to do that. So we need a new performance metric IMO, something like economic equilibrium (see what I did there?).