Sure, by "superficially superior code" I mean that LLMs, by design, produce code that has syntax and idioms that are perfectly in line with industry norms due to the vast training corpus that it comes from. It looks great at first glance.
Normally, this is a signal that the developer is at least informed about best practices in the language and is usually a pretty good indicator that they're thinking clearly about the work they're doing. That, along with reputation, takes a lot of cognitive burden off the reviewer.
However, with LLMs that is all it means. You can be sure the code is norm-compliant, but in my experience that is all you can be sure of. There's not really a guarantee that it has thought deeply about the problem space.
It's like a bridge that looks great.