[ludicrousdispla]

The decisions made by individual interviewers are extremely accurate if you realize they are just saying 'YES - I want this person hired' or 'NO - I don't want this person hired'. It's entirely subjective but likely very repeatable.

[thaumasiotes]

It's not repeatable; that's the whole point of describing how the same person gets wildly different results when they interview on multiple occasions.

[ludicrousdispla]

Candidates are getting different outcomes on separate paths through the process because different people are interviewing them.

[thaumasiotes]

That gives the process low reliability. That's all that matters. If every interviewer is perfectly internally consistent (and they aren't even close), that wouldn't do anything to help the hiring process unless the hiring process took advantage of it.