Debatable, I'd say many of them are alt accounts gaming both DT and sig campaigns while suffocating the normal members, and if there is anyone who is unable to earn their share by contributing and doing something deserving, it might be better for them to find something they are good at. But from a moral standpoint,  yes he is responsible, however, how can we be sure those hundreds of accounts are not being controlled by 20 people? So it's a grey area with a lot of room for debates.