There's is no such thing as cheating in a video game (unless you hack the programming and alter the game, that's the only way to cheat). The game can only run what it's been programmed to do. If bungie didn't want us to be able to do certain things, like share drops you got from another character, they would have given each character slot their own vaults that were shareable between characters. But no matter how much we try to tell others, they're still going to think it's cheating.