fluffercloud

@perpetualalligator thank you so much for your kind words! I honestly just needed to hear that, I think. You are right, it shouldn't really matter. I do feel bad about the interview and I could have done way better. It wasn't good on my morale, but I do feel a lot better now! Guess I'll start trusting myself a bit more from now on. Thank you again for being super nice and understanding! 
 

I don't think that's fair. I'm not @fluffercloud but I think that what they just wanted to express their frustration and disappointment about all of this and there is nothing wrong with that. I think that it is ok to feel bad about an interview not going as well as you wanted it to even though you already have options. The title of this thread says "vent about anything", so I think this should be a place where people are not judged for what they post or how the feel. 
For what it's worth fluffercloud, I understand that it might very frustrating, and you might feel inadequate or at least that you gave that impression to the admissions committee, but I think that as human beings they understand that people sometimes have bad days. From what I understand you talked to them in two other occasions (including the writing task?), and you felt that you did well, so they know that you are a capable person. Also technical issues are out of your control and they should be understanding of that. Don't worry, you probably did fine, you did not make them question their decision to give you a chance and one seemingly bad interview will not ruin your chances. If it does, then it just wasn't meant to be. You also have gotten into your top choice so that means that someone saw something in you and thought it was worth it so, you're fine. Don't worry! You got this

You said that you already got an admission offer from your top choice school, so why would any of this really matter?

Fluffercloud asked, “Can anyone of you pls tell me how major of a fuck up it was?” And I’m saying that it wasn’t. It’s not a big deal in the grand scheme of things since he/she still has a great offer despite it.

I am annoyed at the people in other threads and on the results page who have been wait listed for a program and are announcing that people who have been accepted should hurry up and decide. The real kicker I saw said something along the lines of: if you got in can you please turn it down if you have other offers because this school is my first choice.
The sheer entitlement. 
Also annoying: people who got into programs they applied to but don't want to go there (?), so now they are bashing the only school that accepted them, that they applied to. Moaning and groaning about having to go through a second application cycle. Why did you apply if you were going to be a snob about it? So you could add it to the list of institutions you got to turn down? Jokes on you.
Being able to pursue a career in academia is privilege. It is not a given right. Whatever you think of yourself doesn't  allow you to feel entitled to anything. 
Everyone who pursues a career in academia works hard. Nobody owes you anything. You are not the smartest person in the room.