Even with the training I had received at FAANG, there's still (and will always be) a level of subjectivity. I've seen colleagues hire candidates that didn't meet the "bar" but because the interviewer really "liked" that person, they went to bat for the candidate. Ironically that same interviewer would click "no hire" despite the candidate meeting the bar, all because the interviewee every-so-slightly rubbed them the wrong way.