At present, freeShop is still working and receiving new games (the freeShop cache was last updated two days ago), and title keys have no connection to freeShop and the repository for those is maintained by (a) different person or people.
It is worth wondering how long freeShop cache updates will continue, though. It's really not clear how the updates are occurring currently. Given Cruel's current circumstances, it would appear that cache updates are being automated on a server somewhere, since it seems unlikely he's still doing them manually. Does anybody have control of that server in order to continue paying for its operation costs, etc.? I have no idea. Without somebody coming forward to tell us, it's hard to say how long freeShop cache updates on the current repo will continue to be provided.
That said, as we just discussed in the thread, the process of creating an updated cache isn't terribly complicated, so in the absolute worst case scenario, all it would take to "revive" freeShop if or when those updates cease would be for somebody else to start offering cache updates along with a fork of freeShop directing it to the new cache server. In short, freeShop will probably keep working in some form or other. You may need to update the app itself at some point if the cache server stops updating.