"Why blame vibe coding?"

Because it allows you to produce so much code that it's not viable to carefully review each line/module, and get the benefits of the fast output.

Writing code yourself forces your brain to start creating pathways in your brain and you can verify the correctness of those pathways in your mind (e.g. am I actually doing this right, if I have seen such API would I be happy to use it,...)

Not saying we should write code manually, just showing the differences.