No, AI assistance is NOT welcome in general. They mention security bug reports, so using AI like ASAN etc. is welcome.
Attackers are going to use AI models to find bugs or 0 days quicker than those without it and of course they will not report them.
So it only makes sense to allow it and accept (valid) AI reports from reputable security researchers to keep ahead before a bug gets exploited in a vulnerable release.
As long as the submitter shows their understanding of the reported bug means and what the change is, it is fine to do so, with the reviewers gating invalid reports.
> so using AI like ASAN etc. is welcome.
AddressSanitizer is not "AI", nor does it use AI. [0]
[0] https://static.googleusercontent.com/media/research.google.c...