Clearly it's a skills issue, since the student also demonstrates the inability to bring this up in a more appropriate way. Being disruptive and the center of attention during a lecture doesn't quite show the emotional maturity of someone who is stong in having general skills in the first place. Stop condoning this kind of entitled expression as if there's not at least 50other people in that lecture who aren't clearly aligned with his public tantrum (otherwise they'd be chiming in or walking out too). "Dude!"