Welp, this was 20 years ago and I was 25, and literally no one ever gave me any instruction on how to conduct interviews (over my entire career). If I was a "huge asshole" to this person, then I'm sorry, that wasn't my intent, and I hope they're doing well and weren't too negatively impacted by my attitude.

To be honest though, the whole corporate world is institutionalized assholery, from giving candidates take-home coding assignments and then ghosting them, to laying people off without even giving them a chance to say goodbye to their coworkers. The entire leadership of that particular startup was assholes through and through. It's difficult to maintain one's humanity in the face of that (esp at a young age) and I'm glad to be out of that game.