(Not saying this happened to me but it's a common story I've heard in the last few years)
I agree with the author that it is hard to assess someone's skill if you have a list of 100 people to interview and you know nothing about them. The bigger the stack of applications the easier it is to treat them like data and not people.
I know plenty of software developers who write, maintain, or contribute to OSS libraries; they write blog posts, give talks at conferences/meetups, and make videos in their spare time (or sometimes as part of their work). I've rarely walked into an interview where the hiring manager or the technical interviewer hadn't just read my name off my resume as I joined the meeting. Get to know the candidate's work before assuming they know nothing!
Maybe people involved in the hiring process should be given more time to properly research a candidate. Relying on ATS' and putting the burden on applicant's to do the work of proving themselves is causing a lot of folks to burnout just trying to get a job.