I use the Like / Dislike buttons a lot on posts, it's clogs up the board less than just quoting & posting "I agree." Zlatan seems to have taken it a bit personally that I keep Disliking his posts, and I'd assume this is some sort of "revenge." It also appears that now he's been called out on it, he's gone all defensive, which one can only assume is because it's a bit of a childish thing to do!