I don't know if the mentors were taking the ADHD into account when they noted how distractible he was. He's very talented, and had a lot of compensation skills. Those compensation skills didn't work for the program, but I'm sure he'll succeed somewhere as a performer.
I was rooting for Ali, who was particularly challenged by the slushie part of things, but didn't back down. She's very determined. Ali was one of the MVPs of the episode.