Humans do have capacity for deductive reasoning and understanding, at least. Which helps. LLMs do not. So would you trust somebody who can reason or somebody who can guess?

People work different than llms they fond things we don't and the reverse is also obviously true. As an example, a stavk ise after free was found in a large monolithic c++98 codebase at my megacorp. None of the static analyzers caught it, even after modernizing it and getting clang tidy modernize to pass, nothing found it. Asan would have found it if a unit test had covered that branch. As a human I found it but mostly because I knew there was a problem to find. An llm found and explained the bug succinctly. Having an llm be a reviewer for merge requests males a ton of sense.