Yeah, I’ve never seen this type of license before (aside from CC BY-NC, which doesn’t have an exception for co-ops and doesn’t seem to be widely used for code), but it makes sense. I think a lot of people (like me) find licenses rather complex and tend to flock to the most popular ones, and it’s not as easy to convince someone to use a license that’s drastically different to what they’re used to (as opposed to, for example, MIT vs. BSD 2/3-clause, or GPL vs. MPL).