The Lobst will always tell you what happened to him, but he'll never tell you why.
Karl has to be aware how much of a hypocrite this makes him look, even to his own audience. He did the exact same thing to Billy, but worse, in wider scale, over a longer period of time, and then bragged about weaseling out of the court-ordered punishment he was supposed to receive for it.
Maybe that's Karl's strategy. He trying to be a huge hypocrite on purpose by using the same type of arguments Billy used. So when Karl wins, he gets to make a video and say "Look how easy it is to fool judges. This gullible judge fell for my bullshit sob story just like the last one fell for Billy's. This proves that Billy owning my ass last year meant nothing."