Been a bit of a bother trying to find the actual info and not a rage piece that makes FOX News look sane. And I don't touch that agency with an 11ft pole.

From what I remember reading, Linus uses LLMs to help during bug hunting - the second pair of eyes. This is actually a useful part of the AI models - they may be awful at code writing, but they do seem to have some capability when looking over code as a first line proofer. That is, it's useful for you to get a direction as to where to look further with issues.

As for the Assisted-By tag being removed, it was a matter that no one was really using it, making it functionally useless.