That is incorrect, re-watch the video
Travis McMichaels changes position, he was standing to the left (out left) of the truck between the opened truck door and the left edge of the road, like in the middle of the road. He could easily see where Arbery was going. Arbery, instead of jogging/running straight for Travis, veers to his right to pass the truck on the grass. Travis is the then shown he moved position from being in the middle of the road, to being in front of the truck to meet Arbery.
At this point, this is aggravated assault, he moved, with shot gun in hand towards his victim. However he fires at Arbery when Arbery is now in front of the truck. Arbery, with no other options then to either attack or die, wrestles for the shot gun, Travis fires shot number two off camera, we see the buck shot blast enter the frame, it was a possible “miss”, coroner rule that one blast grazed Arbery’s hand. Both move back into frame where Arbery tries to take the shotgun but Travis finishes off Arbery with a third fatal shot.
Dude, I seriously don’t know whether to question your IQ, your vision or simply your ability to correctly process REAL visual images and REAL actions that conflict with what you would like reality to be.