This is a good deal for small organizations that like to have many small repositories (for internal libraries, utilities, micro services, modules, etc).
Sure, it screws up a few models that rely on external collaborators to get access to private repos, but those can stick with the old model for a while (at least 12 months). And in the meantime GitHub may adjust their model to accommodate those situations too.
Lastly, this is a huge freebie for individual accounts that now get unlimited repos for $7/month. That will benefit a lot of people.
So I don't see this as PR spinning, but rather as an overdue move on github's part to a model that makes a lot more sense and benefits small organizations and individuals.