Off the top of my head... He consistently plagiarizes, lies, gives incorrect and bad advice, spams the forums, necros everything, harasses users, doesn't Google before he posts, all while acting like he's a knowledgeable expert, when in reality, he has contributed nothing. He has broken pretty much every rule we have several times over.
Because he's a huge annoying pain that backseat moderates, tells everyone what to do, and generally has no idea what he's talking about.
The only reason he still has an account on MR is because I'm too lazy to deal with banning him and the 37 shadows he'll make immediately afterward.
I also want to add that most of us don't hate HIM, we hate that he continues to be as loud as obnoxious as he possibly can. If tomorrow he stopped trying to tell everyone what to do, started working on his own portable, and asked genuine questions that he can't find the answer to by googling, I would be supportive and helpful. But instead he wants to smear shit all over the walls.
^^The initial reason I didn't ban him from MR^^
I want to see people grow to not be so insufferable. Sometimes it works, sometimes Shank stays as Shank.