A cheat that doesn't allow any cheats.
If you don't want to use cheats then don't use them. It's not like you're forced to. At the most, there'll be a cheat section in the pause menu (I think there was one in RDR) but I don't ever remember seeing one in a GTA game before. Just ignore it if it's there. Cheats kind of only exist in the game if you use them. So it's up to you.
Cheats I want are just to spawn vehicles and weapons. Maybe a cheat to raise/lower wanted level. I never use cheats during the story but only when I have completed it. I create a new save and cheat on that but never save it after entering a cheat. I use this new save just to load the game up and have fun in the game. Nothing wrong with it as far as I can see.