What, me? I've never even heard of game genie! And neither has my friend Justin Bailey!
Yeah, it is true that a lot of people did cheat in older games too. But back then cheating felt a lot more like cheating, and you had to make extra effort to do it. If you beat the game cheating, you then wanted to turn around and beat it not cheating. And frankly, older games cheating were harder than newer games not cheating. And now beating the game cheating feels the same as beating it not cheating. It doesn't give you quite the same emasculated feeling.