I kinda wish I could look at the code, but it's not open source and the frontend sources are minified/obfuscated, but it's long and looks like it's using React and a css-in-react approach, which also generates a ton of code.

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.