> Of course you can ask them to do it. You can literally ask them to "write better code" (yes, with this exact phrase; see [0]), and you'll get better code. More performant, or more secure - it depends on specifics of the case.
That wasn't the requirement though. He said he wanted a performant or secure app, not "more performant" or "more secure". "more" is trivial, but actually getting to a good state is not.
To actually make a larger program secure or performant you need a unified higher level architecture that is adhered to everywhere, vibe coding can't get you that. It can do some micro optimizations as you said, but it can't do these macro contexts and architecture. You can ask it for suggestions for such architectures, but you can't make it implement a full scale large app with all components using it.
That wasn't the requirement though. He said he wanted a performant or secure app, not "more performant" or "more secure". "more" is trivial, but actually getting to a good state is not.
To actually make a larger program secure or performant you need a unified higher level architecture that is adhered to everywhere, vibe coding can't get you that. It can do some micro optimizations as you said, but it can't do these macro contexts and architecture. You can ask it for suggestions for such architectures, but you can't make it implement a full scale large app with all components using it.