I guess a full time vibe coder would develop an intuition based on experiences with vibe coding and launching stuff and getting feedback. This process would increase their level of understanding and intuition.
Someone could "vibe bake" cakes by trial and error with the help of AI, then try to sell them and get feedback. That might work, or they might poison someone. Alternately they could learn how to bake and study baking to develop actual skills and understand what they're doing.