It doesn’t bother me. I had completely forgotten about it until recently. I was just curious to see what others would think, and want to make sure you have the background facts before you weigh in.
You clearly were hurt by this, as evidenced by your repeated justifications for why you should have been accepted.
I recognize and validate your hurt feelings. You really wanted to grow, and this option was closed to you, and your neshama is pained by it to this day.
However, our justifying your hurt feelings is not going to give you the closure you need. Our criticizing the camp will do even less to give you that closure, and is simply sinas chinam.
The right thing for you to do is go to the people who hurt you, tell them what they did, and they will certainly ask you for mechila.