And yet when a company tries to reduce a candidate to a consistent set of objective criteria as best it can--meaning, the ability to understand programming problems and solve them in a structured interview--people get upset because it doesn't account for the "big picture" of the candidate and unfairly excludes people who'd otherwise be a great fit.
The reality is that any interview procedure is bound to have some false positives and some false negatives, and there will always be people who see themselves as false negatives (correctly and incorrectly) who'll complain loudly about any procedure.
