There's a difference between saying, "Hey, look at this cool thing I injected into the game that lets me ruin the experience for other players! Isn't it neat?" and saying, "Hey, look at this cool thing I injected into the game that lets me ruin the experience for other players! Isn't it neat? Want it?"
Even if there isn't some kind of key-nabbing/account hijacking code in the background.
Dotdot and Computermix claimed they did it for the challenge and the thrill.
I don't think that needs to be claimed. I'm sure they're getting their fill of the latter, too.
It's comparable to seeing how many of your neighbor's dogs you can abuse before getting caught just for kicks. (as far as the sought-after rush goes, the situation obviously isn't very similar)