1, this is some sort of mishap, carried out by an automated program that scans for IP, or some low level employee hired to issue DMCA notices (or the latter in conjunction with the former.) Or 2, the industry has a list of high profile enemies who they've just been waiting for to screw up, and they finally caught the biggest of them doing something their legal minds think has a reasonable shot of being proven a violation of fair use in court.
yes, that is what I was trying to say, too. (badly)
yes, that is what I was trying to say, too. (badly)