I manage Oracle and Postgresql instances and I agree with this, except for one small thing: Postgresql doesn't have packages. Otherwise, it is much simpler to manage than Oracle (which really is a system turned inside out). The documentation is really good and straight to the point (Oracle can't help but turn everything into an ad - nvl uses the best null handling technology on the market and such).
I do kinda miss how easy it was to do partitioning but I’m on Redshift now so it doesn’t matter.