Because he very likely has been. Putin has a long history of people "mysteriously" dying. if it happens once in a blue moon, it's a conspiracy theory. But it happens so damn often that it's practically undeniable.
Dont like this guy. if i tell him my favorite movie is whatever and he starts going off about what language im using, i will gladly stay very far away from this person in the future and keep enjoying things in whatever way i want.
True enough i suppose. Though the direct approach is more likely to convince some.