so your basically saying a author shouldn't be able to write a book unless they lived out every chapter??
imo it doesn't matter if someone uses gunplay or not, its all about how the actual concept is executed.. a fresh gunplay concept can be written as well as any other concept.. regardless to each his own, if you don't like using gunplay, then don't.. If someone else wants to use gunplay & it turns out shitty, then let them