I had several UHF 1/4 wave (6 inches long) NMO antennas that I was selling (giving away) at a local hamfest. There were several hams, one of which is an Extra, that asked if they were 2-meter antennas. That is basic knowledge that a Novice class should be able to identify. Should hams be required to be able to sit down and draw out the schematic for a transceiver? I don't think so, but basic, simple things like antenna measurement formulas are very easy to learn and extremely useful. Over time, the urge to learn anything has diminished to the point that if you can identify a PL-259, an Anderson Power Pole and a Baofeng radio, then you must be a knowledgeable ham!
I don't have a problem with people that don't understand things because like I mentioned before, I don't know everything. What really bothers me is when Extra-class folks look down their noses at Generals and Technicians, because they think they are smarter than them, because they passed a test. Just because you pass a test does not make you an expert. Like I said before, once the test is over, you should not stop learning.