You can only make a FOIA request to the US government.
I should think it obvious that yes, every department should in fact be staffed to a level that allows them to comply with this (and all other) legal obligations. Doing otherwise is obviously malicious.
This law was passed last century, back in 1966. It's not like this is some surprising new obligation that they failed to staff against.
Like, technically these requests cost nothing, because they pass the costs on - and because in this case, they've presented an absurd cost to avoid having to do anything at all
It's equally as certain (not very certain) you're attributing malicious intent where there is none. They're both real possibilities.
Of course, but the fact that there are two possibilities does not mean that they are equally probable. The GP "worked at a local government" and they say that "delaying or charging a lot was [...] employed internally."
That moves the needle back towards “may not be deliberate”.