Right, but Linus also has an extremely refined mental model of the project he maintains, and has built up a lot of skills reading code.
Most engineers in my experience are much less skillful at reading code than writing code. What I’ve seen so far with use of LLM tools is a bunch of minimally edited LLM produced content that was not properly critiqued.
Here's some of the code antirez described in the OP, if you want to see what expert usage of Claude Code looks like: https://github.com/antirez/linenoise/commit/c12b66d25508bd70... and https://github.com/antirez/linenoise/commit/a7b86c17444227aa...