It's a good point haha :-) Maybe caused by the fact I've done a fair bit of recruiting (although not at large companies) some years and sometimes drown a bit. I can relate somehow.
I'd bet my hat that most of the recruiters never even saw a single resume that came from the AI, and that the vast, vast majority were immediately filtered by the ATS.
Doesn't even have to be anything big, just that there aren't enough keywords, or that there were gaps between employment that were too large, etc.
The ATS would then rank the applications and score them, and HR just looks at the top 15 or something and picks the top 5, whittles them down to 2-3.
They're not spending 8 hours a day reading resumes.
(my main empathy will go at the recruiters, having to filter out massive amounts of auto-generated applicant files!)