I hear your opinion that a hiring process should stay between the employer and the candidate. Unfortunately, the reality is that most hiring processes today depend on a more human element, like a referral. We hope to make it possible for people without this access can also gather support around their candidacy.
I have an anxiety condition, this would be awful for me, for others with anxiety conditions, for introverts, for people with families, for people who care more about work than about networking.
I disagree that most hiring depends on referrals. I recently did a job search and didn't use any referrals. I have anxiety about posting an anonymous comment on a board to a stranger I have never met and don't care anything about. I can't just invite my manager to speak about my capabilities. Also what if my manager was toxic?