When isn't it? Parent was suggesting the US is underfunding the USPTO. The undisputed claim is that they got all the money they requested. If they need more money, then they should request more. My line of reasoning can be falsified by showing the USPTO didn't get all the money they requested, or that through some bureaucratic machinations submitted an insufficient budget under duress.
This quora post corroborates your napkin math
https://www.quora.com/How-much-time-does-a-patent-examiner-s...
They seem to get 14-29 hours. Your implied claim is: that isn't enough time, for which you'll have to make a case because it isn't established. How much time is enough? What degree of "patent integrity" is acceptable, are there diminishing returns in spending twice as much time assessing a patent? What other federal programs should be sacrificed to make the patent system X% more accurate?