What you refer to as "dickwaving" is them attempting to understand your eye for detail. Great hackers often have fantastic eyes for detail. You might have one, but you missed your chance to demonstrate it by interpreting this so negatively.
Please read the Hacker School Manual for a look at how seriously they take treating people with decency and respect: https://www.hackerschool.com/manual
That's exactly my point. I've read the hacker school manual. I'm suggesting that they are not very good at practicing what they preach, at least in my experience applying to hacker school.
Please read the Hacker School Manual for a look at how seriously they take treating people with decency and respect: https://www.hackerschool.com/manual