I think you misunderstood the comment. It wasn't calling Postgres slow and half broken, it was making a stab at other home-brewed (NIH, Not Invented Here https:

I think you misunderstood the comment. It wasn't calling Postgres slow and half broken, it was making a stab at other home-brewed (NIH, Not Invented Here https://en.wikipedia.org/wiki/Not_invented_here https://en.wikipedia.org/wiki/Not_invented_here) databases, calling them slow, half baked copies of postgres, implying that they should have just used postgres, but that doing so wouldn't get them promotions.