Simple, well defined tasks: Vibe coding is totally feasible and quite likely to succeed with minimal coding knowledge.

Somewhat more complex programs: Vibe coding can get you a working example up pretty quickly. But if something's off, or you want to change it, it helps to have some coding experience so you know where to look in the code / what to prompt. Without that knowledge, you can easily have the bot go off the rails.

Complex programs requiring multiple layers of technology and is meant to serve people other than yourself: unadvisable to go fully in with just vibes. Even if you get a minimal working example up, it's gonna be hell to maintain without you having a good grasp of the code.