I can confirm that, being in the shooting stall next to a couple thugs awhile back. At 7 yards they could hardly manage to hit paper. They were more interested in looking “cool” and were actually shooting sideways. Since then, I have seen similar situations at the range. It offers some comfort.
I was at the range checking a new load on my cowboy pistols. With a single action revolver I was putting more rounds faster into a little NRA .22 target at 7 yards than the two gangsta wannabes next to me managed to hit a full size silhouette target with a couple of mags full of 9mm.
I didn't notice if they were doing the sideways thing, I was afraid I'd start laughing if I looked at them.