The link you cited is talking specifically about "unstructured interviews", the sort where you're judged based on handshake firmness and questions like "What is your greatest weakness?" It shouldn't be too surprising that these are poor predictors of job performance.
Programming technical interviews are not supposed to be like that. They're supposed to be some mixture of a relevant-ish skills test and a plausibly-deniable IQ test. (One constraint here is that anything which is overtly an IQ test will make the company's lawyers get twitchy and start nervously trying to remember the details of the Supreme Court decision in Griggs v. Duke Power Co.)
Programming technical interviews are not supposed to be like that. They're supposed to be some mixture of a relevant-ish skills test and a plausibly-deniable IQ test. (One constraint here is that anything which is overtly an IQ test will make the company's lawyers get twitchy and start nervously trying to remember the details of the Supreme Court decision in Griggs v. Duke Power Co.)