The potential customer rarely cares whether a service provider is running their business well. What matters is the product's value added and risks added, as compared to just using the underlying tech directly.
That's a big name for a slop fork. So many possibilities (with LLMs and without) but Google just can't bring themselves to do anything creative, let alone transformative.
The meaning has changed very quickly for some reason, but I think the original meaning was that you evaluate the result in a superficial manner by checking if the program seems to work fine. So "vibe" here is as opposed to any methodical or formal approach. No code review etc.