Calling something "vibe coded" feels similar to calling something "woke". Its used for everything so it lost all meaning.
If I start writing a function name and the coding assistant suggests exactly, character by character, the function signature I would have typed, is that vibecoding? If I ask an agent to check out my classes and create me a json schema from that, what about that? What if I ask it to write me some database connection stuff, boilerplate that is basically directly copy pasted from docs?
The presence of a cursorrules file signifies.. Nothing. Most projects now have a prompt file to store general context, like styling etc. Most programmers use coding assistants. The use of coding assistants does not, in of itself, mean bad quality. Obviously you have to hide it because people get irrationally angry about it.
The blind AI hate does not help. LLMs can be useful. Is it stupid to have an LLM write an email so the other side can use an LLM to summarize it? Yes. Is LLM slop annoying? Yes. That does not mean that everything is bad. If you check out the Developer-sphere, people who have tried coding assistants for a couple years now, the consensus is "overhyped but definitely useful".
Example, read this comment section: https://news.ycombinator.com/item?id=44836879