No one was making a gun because it looked like a dick, even subconsciously, they were trying to make a thing that can kill people without you needing to be near them to do it. People don't get artsy and symbolic when designing new weapons, pragmatic design is very much the main thing, otherwise you'd see people attaching truck balls to the grips or stocks of guns, which actually, that'd be funny as hell, especially an automatic, every time you fire those balls be bouncing. But yeah, unless you're a serial killer you're not sexualizing your weapons of war while creating them in the first place. If weapons are based in anything in nature it's tree branches and sticks, cause those were the og weapons.