I also notice the exhaustion. That's probably why they vibe. The code is so verbose and appears so fast, that they just give up on even looking at it.

Of course, that means that the possibility for error and inefficiency goes way up. I keep finding duplicate code, that snuck in. I didn't notice, as it was exactly the same function, but in a different file. Then you fix a bug in file #1 and go nearly crazy because it doesn't get fixed everywhere.