>what the hiring manager wants to know

In perfect information theory, yes. In practice we some HN article where on the fifth round some FAANG wants the applicant to juggle dry erase markers while reversing a hash algorithm while standing on their head.

Multitudes of companies use hiring agencies, and at least from what I've seen these agencies are more about numbers than quality. An AI application that overstuffs your abilities is far more likely to be observed than the resume of an earnest person.

Hell, worse than that, there seems to be a growing industry of companies that just put out job listings as a means of collecting information on people and selling it off, rather than providing any kind of job.