help explain the relationships in a complicated codebase succinctly
It will offer an explanation, one that sounds consistent, but it's a crap shoot as to whether or not it accurately described the code, and no easy of knowing of the description is good or bad without reviewing it for yourself.
I do try to use the code review feature, though that can declare bug based on bad assumptions often as well. It's been wrong more times than it caught something for me.

Yes, just some people figuring out that Grok was steered toward ass-kissing Musk no matter what, and exploited that for funny output. So the takeaways are: