My guess is the grandparent is (mis-)remembering the kerfuffle[0] around mongo shipping a copy of PG as a "BI Connector". But yeah, the timeline is off, that was in 2015.
Actually, no. I'm remembering asking myself how Mongo worked back when it launched, and reading somewhere that it was a heavily modded Postgres under the hood (like Amazon Redshift, which makes no secret about it, since).
I might be misremembering, though. And there's a possibility that what I read then was inaccurate.
I might be misremembering, though. And there's a possibility that what I read then was inaccurate.