It's not an unheard of notion that employers, particularly large tech companies, might use automated systems to reject candidates, without any human involvement.
This article claims the following:
... an ATS will scan your resume for keywords and relevant work history to make a snap decision on whether you will advance to the next round ...
If this automated rejection was considered a useful feature by employers, then I would expect that Applicant Tracking System (ATS) companies to be advertising it. That is, I would expect descriptions on their websites talking about how their system accurately filters out bad resumes/CVs.
But, when I tried to use a search engine to search for such advertisements, I instead found just stuff about claimed ways to "beat the bots" and get a resume/CV past these filters. The existence of those sites does not prove companies are now, or ever did do this.
Going directly to the companies websites themselves hasn't turned up any claims about entirely automated screening yet either. On one ATS company's website, I saw mentions of using AI/Machine Learning but I was unable to find any specific claims of automated rejection of resumes/CVs.
Some examples of claims about using AI/ML regarding applications from this page created by an ATS company:
Allow recruiters to immediately identify and prioritize highly qualified candidates through automated review of 100% of inbound resumes
Help sourcers, recruiters, and hiring managers find top talent by surfacing profiles similar to their favorite candidates in seconds
That first claim seems too vague to say whether it includes entirely automated rejection. The second one sounds like it would influence the order in which resumes are looked at, including making some resumes not get looked at by a human at all, because they end up at the bottom of the pile. But, that's not the same thing as rejecting a candidate entirely automatically.
Is there any evidence that any ATS companies have definitively advertised entirely automated rejection, now or in the past?