“Do you know who anonymous is?” is what I heard. Since the Anon collective is formed of many, its hard to make sense of “I don’t want to say, but you’d be surprised.”
Its as if he responded to the question “Who is Q?” rather than who is anonymous.
Could the youtube be altered to remove the Q”?
You have said what I have concluded too - the question was about “Anonymous”, the answer was about “Q”