I don't think anyone has suggested that was a suicide by cop.
I'm thinking of cases like the 16 year old kid driving a stolen car who pointed realistic replica at the cop who stopped him--people choosing death over jail.
False dichotomy. You cannot assume that the perpetrator wants the police officer to kill him because he is pointing a gun; it may be that the perp is simply desperate to escape, and in desperation, thinks that such an action will help him get away, even though a dispassionate third party can clearly see that's insane.
People in situations like that are far from rational actors: their actions cannot be interpreted as calculated and the result (their death) cannot be interpreted as the result of premeditation.