I think they switched to web5 now which is more web scale

Oh, you missed 90% of the story. They've abandoned the Sphinx clone over an year ago. Then they were going to use Nostr and they even had code working for a proto-zap spec using keysend. Then they were visited by a committee of Web5 and people involved on the Nostr stuff (Christopher from https://thearcapp.com/ and another guy at least) were fired and they started from scratch.

But since Web5 doesn't seem to actually be finished yet I wonder what they're doing.