You never see him on the roof top. Yiu see a figure running we are told is him. You never see him in a ball cap in surveillance video. It’s someone else. You don’t have a motive. It’s all conjecture, telling us it’s factual when you cannot tell if any purported images of him are actually him. The ball cap guy is not Tyler Robinson. Does not look like him in the face nor physique. And Kirk was never shot with a 30-6. Had he been, half his neck would have disintegrated. Clearly you have a blockage to not see the guy and the firing of that palm pistol.