My critique is pretty minor as most of the technical releases from 100 rabbits, as far as I can tell, is libre/free licensed, with the non-commercial licensing reserved for writing and art. Even so, it means there's effort required to decouple the non-commercial aspects of projects from their libre parts and sends a big signal, to me at least, that I should only ever consider their strictly technical work for use.
When talking about permacomputing, for example, I don't know why one wouldn't encourage, in any way possible, commercial viability that would lead to the stated goal.
I have an affinity for the 100 rabbits folks, and I deeply respect a lot of their work, but their reliance on non-commercial licenses means that they're tacitly supporting copyright terms that are dis-proportionally long that, in most cases, is well over a century at this point.
Note that Stallman also has the same stance, putting his work under a "no-derivatives" license, so it's not like free software folks believe in "free culture", either.