We used to have a very basic C whiteboard test for junior devs. Super simple "find the bugs" test. The best technical performance I ever saw was a guy that walked up to the board, swiped with the marker to mark the bugs like he was swatting flies (found every bug correctly). He finished the test in maybe 10 seconds, where typical was five minutes or more. He sat down in a huff. I didn't know we had an asshole test until that moment. I thanked him for coming in and showed him out. I'm so glad I never had to work with him.
This vaguely reminds me of somebody I know who's also pretty smart, but socially extremely odd to the point of being rude/insensitive. Though I'm pretty sure the person I know is on the spectrum and likely doesn't realize/mean it.