It's a code/text generator not a pair programmer - not that different from past code generators which were always designed by seniors who knew what the end results should look like, and used by juniors to make them more productive and less error prone. Sure a junior can vibe code... something... but do they know what they want at the outset or do they know when things are going off the rails and a step back is needed? It's easy to get lost way out in the weeds if you can't check your (experience) compass every now and then.