Whoever thought it was good at coding? That’s not what it’s designed for. It might get lucky and spit out somewhat functional code sometimes based on the prompt, but it never constructed any of that itself. Not truly. It’s conceptually Googling what it thinks it needs, copying and pasting together an answer that seems like it might be right, and going “Here, I made this”. It might be functional, it might be pure garbage. It’s a gamble.
You’re better off just writing your own code from the beginning. It’s likely going to be more efficient anyways, and you’ll properly understand what it does.