Ad hominem doesn't mean "a public attack". It simply means arguing that a point is invalid/less valid because of who is making it. Or as Wikipedia says: "atte

Ad hominem doesn't mean "a public attack". It simply means arguing that a point is invalid/less valid because of who is making it. Or as Wikipedia says: "attempt to persuade which links the validity of a premise to a characteristic or belief of the person advocating the premise." -- in this case, the characteristic is "has not done something great in the eyes of Jobs".