It's a joke, the context of which is that they removed Postgres support from Ghost a while ago, and people keep complaining about it.
See: https://blog.ghost.org/dropping-support-for-postgresql/
Re:Introducing Ghost 2.0
by fusiongyro on Tuesday August 21, 2018 @06:12PM
(#17814294)
I have to give him credit, I was here to complain about it.
Postgres is open source.
Why do they owe you?
If it matters, write the code.