Sure, it may work, despite the dubious methodology, but who is actually going to pay to have their workers go through this? Since the bubble days of the 90's, training is an area that has been eliminated from virtually all budgets in favor of hiring only 'experienced' workers. No organization wants to pay for training anymore even when there is a shortage of experienced labor.
I worked for a chip manufacturer that in the early-mid 90's put new production staff through a MONTH of 8-hour-a-day classroom training before they even got into the fabrication facility. After a couple years, it was down to 3 weeks, then 2, then 1, then layoffs. The modern management culture says that there is a limitless pool of cheap, experienced labor, so why train?