Unless the person was huge and really slammed into the wall, this damage is evidence of a seriously substandard shower wall. In any case it needs to be demoed and redone.
If the tub or shower bottom is placed so that the wall must be single layer (green wallboard or cement board), it might be a good idea to put blocking between the studs. Maybe 2x4 blocking at shoulder height and 2x8 blocking centered at 36" above the floor for future installation of grab bars. A 42" long bar horizontal on the long wall is useful even for young and mobile users, and a 24" long bar horizontal on the end wall helps with ingress and egress of a tub shower.
I have seen one shower redo in which the original backer was 1/2" standard drywall, but the redo under the new tile was a single layer of cement backer board of thickness slightly less than 1/2". In this job the tile used in the shower walls was left over porcelain floor tiles 18" x 18" so much stronger than standard bath wall tiles. (It was certainly a pain to drill through.)
The original drywall was removed up to where the tile stopped and shim stock was placed on the edges of the studs so that the outer surface of the new backer lined up with the 1/2" drywall above it. But the blocking for grab bars was put in before the shims and was lined up with the studs. I don't remember if shim stock was placed on the blocking so, between the studs, there was, or could have been, a slight gap between the backer and the blocking.
Some years later I installed grab bars with screws into the blocking and had to be careful not to screw in too tight. I later realized I could have squirted silicone caulk onto the holes in the tile to overflow into the air gap and so provided support for the grab bars.