I thought the same when reading the headline, but the approaches are quite different.
Pocketbase (at a very high level) takes sqlite and layers on a go ORM and a relatively loose (on the scale from typical rest/http on one end to graphql on the other) autogenerated REST api, a grammar for expressing authz constraints, websocket updates and an embedded js engine for registering handlers for the various crud model and webserver events.
It's _very_ well designed, but I think the approach taken here with datalog and triples on top of postgres is worth a close look as the trade-offs will be very different, though it does seem like a lot of layers
Even though the two may not be fully comparable, I would like to give another vote to pocketbase, simply because I've found the experience of working with it to be absolutely stellar.
