Most glarrying issue is the placement of the stock in his shoulder. Which suggests a scope bite is incoming. Also looks like one of the guns on the table is facing backwards, barrel away from the targets. Hard to tell.

I don't see a suitable backstop behind the targets, but maybe this whole setup is in a gravel pit or something, can'really say from the photo. All that shit on the tables should be behind the firing line, but that's more of a safety preference than a huge issue.

If we want to start nitpicking, his eyepro won't do any good on his forehead. Food/beverages should not be kept or consumed on the firing line due to lead contamination, and his stance will not adequately support the platform for follow-up shots.

Guy's got at least 2" of mechanical offset so shooting soda cans at 4yds you're gonna be aiming at the air and hoping you hit the can. Without a target which can be measured you have no idea of just how much the mechanical offset is affecting point of impact so you can't learn anything. This guy is basically just turning dollars into noise.

In moto there's a thing called "goon riding" - where a guy who has talent, knowledge and skills intentionally rides like some dufus. Usually for making some funny video or something. Maybe this is goon shooting, because the way it's being done has no value other than comic relief.