Except he hasn't debunked anything. He's pointed out the specific niches where performance matters and one of the 5 "excuses" he raises is countered. Some software counters some of the "excuses" some of the time. Not all software counters all of the "excuses" all of the time.
If anything, the article points out the accuracy and value. of the five metrics for evaluating performance needs over other business needs.
If anything, the article points out the accuracy and value. of the five metrics for evaluating performance needs over other business needs.