>  What exactly are emergent features when vibe coding?

Regression to the mean. See the other HN thread[0]

The LLM has no concept of "taste" on its own.

Scalability, in particular, is a problem that goes beyond the code itself and also includes decisions that happen outside of the codebase. Infrastructure and "platform" in particular has a big impact on how to scale an application and dataset.

[0] https://dornsife.usc.edu/news/stories/ai-may-be-making-us-th...