The term "vibe coding" gives me bad vibes, I feel that it is in some way an insult to my craft, the way a carpenter might feel about Ikea. But if only LLM's are going to read the code, the LoC aren't a big problem, increasing cost significantly less than if a real person would have to read it.

The two biggest issues I can think of with this approach is performance and security, with the first one only being a problem if you "make it", and the second one being too often ignored with or without vibe coding.