Here's the actual mailing list post: https://lore.kernel.org/lkml/CAHk-=wi+JvcuKF2NaD_rGiYrwkR6rx...
Actual context: Linux 7.1-rc4 release, Linus remarked on a specific documentation change.
The Register somehow turned this into an "article" that says a lot less with roughly the same number of words, and provides "context" by linking to a number of unrelated articles.
here is what seems to be the relevant documentation: https://docs.kernel.org/process/security-bugs.html
see "If you resorted to AI assistance to identify a bug, you must treat it as public." and https://docs.kernel.org/process/security-bugs.html#responsib...
The Register has always been a... weird 'news' source, but they've gotten significantly worse over the last year or two.