This. It's a fascinating project, it is hard to believe how can an FLOSS project be so high quality. In my book it's on the level of Postgres (although it's a smaller project, probably).
No hate here, I'm really grateful for what they've achieved so far, but I think there's a lot of room for improvement (e.g: proper R/W query split, native S3 integration, faster endpoints, ...). I already mentioned it in their channel (they're a really welcoming community!) and I'm working on an alternative drop-in replacement backend (written in Go) [1] that will hopefully bring all the needed improvements.
TL;DR: It's definitely good, especially for an open-source project, and the team is very dedicated - but it's definitely not Postgres-good
A lot of existing tooling supports the s3 protocol, so it would simplify the storage picture (no pun intended).