"Encryption" of media like that is always just going to be obfuscation, you get protection form the anti DMCA removal law, the actual encryption isn't worth the bits it flips. In fact, if you make it "stronger" from a cryptographic standpoint you simply make it cost more to decode and add no strength to the actual defense it is trying to provide (getting further under DMCA umbrella). If you want to criticize it was probably foolish to include actual encryption in the first place, why waste cycles when you can XOR with 0x69?