A manager is not going to handle all the nitty gritty details, that an engineer knows, fine say, they can ask a LLM to make a web portal.
Does he know about SQL injection? XSS?
Maybe he knows slightly about security stuffs and asks the LLM to make a secure site with all the protection needed. But how the manager knows it works at all? If you figure out there's a issue with your critical part of the software, after your users data are stolen, how bad the fallback is going to be?
How good a tool is also depends on who's using it. Managers are not engineers obviously unless he was an engineer before becoming a manager, but you are saying engineers are not needed. So, where's the engineer manager is going to come from? I'm sure we're not growing them in some engineering trees
It's like saying "I want a bridge" and then expect steel beams and cables to appear (or planks and ropes) and that's all you need. The user needs are usually clear enough (they need a way to cross that body of water or that chasm), but the how is the real catch.
In the real world, the materials are visible so people have a partial understanding on how it gets done. But most of the software world is invisible and has no material constraints other than the hardware (you can't use RAM that is not there). If the hardware is like a blank canvas, a standard web framework is like a draw by the numbers book (but one with lines drawn by a pencil so you can erase it easily). Asking the user to code with LLM is like asking a blind to draw the Mona Lisa with a brick.
There are already companies that exist to audit the security of codebases programmatically so this will just be part of the flow