Here's a theory: the shot came from another shooter, a white hat and real sniper for whom 300 yards was a cakewalk. We have no idea about the ballistics of the ammo, but perhaps it was smaller caliber. Perhaps the guy killed or the other victims were very sad but necessary collateral damage. If there was a known hole in security that was known to be being exploited but little that could be done about it, perhaps there's a secret sniper out there somewhere. Sure, it would be best to kill Crooks, but if the SS was blocked on purpose, limited by their leadership to provide a wider perimeter and the police were corrupt or unable to seal their holes, the best option rather than a potential dead Trump might be to just have a guy who could give Trump a scratch and have the whole thing blow up on the derps as everyone points to this other guy, who may have gotten a round or 2 off…maybe not. The guy in the bleachers was a firefighter for God's sake. The guy who claims to have helped him was an ER doc. Who else was up in those bleachers taking spots away from innocent MAGA randos? Was that upper deck of the bleachers filled with first-responders and patriots willing to take a bullet? Stray bullet hitting the hydraulics to cause more of a diversion? SS countersniper confused about the shooter. What if he was watching and didn't take the shot yet because the sniper wasn't just about to shoot? But a shot came out, so the sniper looks up like WTF and is confused. Doesn't know WTF is going on, so just concludes to take that guy out. Hell, we know he was blocked by the bushes and that 4chan shit seems like BS. Regardless, we don't have good confirmation on who actually shot at the guy in my opinion. Anyway, just a though since all the Q post point to future proves past…aspects of this point to a set up for sure and a dangerous but necessary way to prevent an assassination would be to create a FF within a real attempt.
He took the shot first to preempt the actual shooter getting a chance to fire.