so players should restrict themselves to games and not pretend they are building SHTF things or assume they know how to counteract targets that are not made out of paper and will actually shoot back at them, and possibly from more than one direction, simultaneously.
and then they will discover a magical meaning of the sling, and why you need a free left arm when you crawl out on 3 tentacles from one position to an another, maintaining control of your rifle.
The most elite units in the military use competition to hone their skills and push themselves as shooters. Training in competition that is not exactly the way you’d fight does not lessen your fighting ability.
I thought we got past this kind of thinking (“shooting in matches with game-like rules will get you killed on a two-way range”) mid-way through GWOT. Apparently not.