After reading the article one thing that struck me was the " internal candidates who were rejected after interviewing with the hiring manager were half as likely to exit as those rejected earlier in the process." Working at a fortune 100 top 10 company I've applied for multiple higher level positions after 5 years and multiple high marks on my reviews and not gotten 1 recruiter call. I did get with one recruiter and…
This is extremely common. A company can't allow for nepotism or favoritism, so it requires a public posting for any open position. Qualified external applicants see the posting and apply. The managers hire the internal candidate they wanted to hire anyway. It's all a huge waste of everyone's time. I'd bet that a large percentage of job postings are insincere in this way.