He said, in response to his taxi instructions, “Understand cleared for takeoff?” Dude. Wrong freq, NOT cleared for takeoff. I watched the video yet again–he made a radio call just after rotating/taking off. I could be way wrong, and RIP Mr. Snodgrass, but if a student pilot made these radio calls, acted like this, and didn’t crash, the instructor should scold him or her. His voice on the radio screamed complacency. Good lesson for me–if HE can become complacent, I could, too.