There is a moderately interesting point to be made here that automated candidate screening software is not a panacea, and while it can do a good job of filtering through the hundreds or thousands of applicants that might materialize for a single post, it might cause you to miss out on a good fit. On the other hand, this article is laden with so much hyperbolic moralizing that it makes me take almost none of it seriou…
But they're not talking about startups. They're talking about large corporations that could sustain training of new employees.
As it happens, big companies already have to train even the most qualified new employees, because they usually have developed complicated internal cultures and systems. Training someone in basic qualifications on top of that is a big ask.
One of the few employers who does that is the military, and they often spend years training people. On the other side of that, officers who receive lots of training are usually legally obligated to serve the military for several years. Though even a basic enlisted man will spend maybe 1/2 to 1/4 of his first four-year enlistment in training.
At-will employment makes that kind of contract impossible in the private sector. So not only is it a big ask for companies to train unqualified people, it's an even bigger ask for them to do so knowing that as soon as those trainees are qualified, they can and often will jump ship to another company.
That might be a risk companies are willing to bear if they're badly in need of qualified folks and can get a competitive advantage that way. I'm generally more sympathetic to an actual business case to that effect rather than vague, entitled complaints about corporate America.