It doesn't matter if it's "good" or "bad" if it's not a politically viable position.
That I think it's an idiotic position is beside the point. Things and prosperity generally are not the problem, and can grow pretty much indefinitely for the foreseeable future if it's done in a reasonable and sustainable way.
> if it's done in a reasonable and sustainable way.
There are a lot of things that would work fine if done in a reasonable and safe way but we have plenty of examples of people making unreasonable and unsafe decisions.
I completely agree. That still doesn’t make degrowth a sensible position.
Nuclear power for example