I think you and the parent comment are onto something. I also feel like the parent since I find it relatively difficult to read code that someone else wrote. My brain easily gets biased into thinking that the cases that the code is covering are the only possible ones. On the flip side, if I were writing the code, I am more likely to determine the corner cases. In other words, writing code helps me think, reading just biases me. This makes it extremely slow to review a LLM's code at which point I'd just write it myself.

Very good for throwaway code though, for example a PoC which won't really be going to production (hopefully xD).