As a lifelong gun owner, you clearly have no understanding of how firearms work and should probably seek out a firearm safety course if you own guns. Please stop spreading dangerous misinformation about firearms. The shit that just came out of your mouth would never be said by a responsible gun owner.
A responsible gun owner always errs on the side of caution. They know that discharging their weapon is an absolute last resort. They also know how loud a 9mm is when fired in an enclosed space, and that even if miraculously in a shopping mall there was no one down range of his shot, it very likely damaged the hearing of nearby bystanders.