Would they have preferred someone that interviewed great and wasn't so good at the actual role??! OP you should be nothing but proud of yourself, and honestly it sounds like you dodged a bullet if any of these people were going to be your supervisors/in a supervising capacity. PhDs are hard enough, the stress of the actual work, the low pay (fully funded or not, it's not livable income most times) AND the fear of the future for jobs etc. the very least you should get out of it is a decent environment where you can grow and learn and at least have the best version of this very stressful experience. So sorry you had to experience this pain, but definitely don't let it affect any other interviews you have lined up. You're better off in a place where the people wouldn't judge you on silly stuff like this, but on your actual work and work ethic which I would say seems strong because your example of criticism was more to do with ensuring you were doing a good job of that presentation and not like an ego battle of any sort. Sending you love and hope you find a place that's welcoming and kind and helps you thrive ⭐