To consider that the AI is simply a tool akin to a ruler that you just use as a guide for your hand, for instance, is simply untrue. AI doesn't work like that. It's not helping you making the thing, it makes the thing, and you don't even know how or with what. You just see the end result. So, unless you directing the AI for every pixels there is (at which point, frankly, just make the dam thing yourself), there will still be unaccounted-for pixels, pixels that was produced and placed there by the AI without you willing it. Pixels you didn't create.