If you do not know the code at all, and are going off of "vibes", it's vibecoding. If you can get a deep sense of what is going on in the code based off of looking at a diff every ten commits, then that's not vibe coding (I, myself, are unable to get a sense from that little of a look).
If you actually look at the code and understand it and you'd stand by it, then it's not vibecode. If you had an LLM shit it out in 20 minutes and you don't really know what going on, it's vibecode. Which, to me, is not derogatory. I have a bunch of stuff I've vibecoded and a bunch of stuff that I've actually read the code and fixed it, either by hand or with LLM assistance. And ofc, all the code that was written by me prior to ChatGPT's launch.
You're repeating the broader definition, great. But your post leaves me with the same question about degrees.
You say there's two cases: no review and full review, "deep sense of the code", and that one is vibe coding and one is not.
What about the degrees in between? At what point does vibe coding become something else?
For example, I would not say "looking at the diffs" to ever be enough review to get a deep sense of what's been done. You need to look at diagrams and systematically presented output to understand any complex system.
Is one person's vibe coding then another persons deep understanding non-vine coding?
If you can answer this question you may be able to convince me.