Andrew German wrote about this. From his blog post I got the impression that this issue is mostly impacting compsci. Maybe it’s more widespread than that field, but my experience with compsci research is that a lot more emphasis is placed on conferences compared to journals and the general vibe I got from working with compsci folks was that volume mattered a lot more than quality when it came to publication. So maybe those quirks of the field left them more vulnerable to ai slop in the review process.