I’ve used it in production roughly 5+ years ago. Both graph data modeling and cypher queries are very fun to work with. It’s both dynamic and powerful but still gives you a decent amount of structure and ACID guarantees.

One thing that is much easier to model and query, or rather more natural and simple, is authorization and other granular questions you might have about how users and data is connected.

A thing that I can’t wrap my head around however is temporal data modeling with graphs. Haven’t seen or thought of anything too satisfying yet, that meshes well with how I think about graphs. Whereas in SQL it is more explored and clear to me.

I agree that their marketing is very aggressive, but this tech has quite some merit.