OK, and that means he published without doing the minimal research needed to know that:
1. periodic recalibration (i.e. going from range charge to low SOC) is needed to maintain high reliability of screen estimations.
Did you read the article? He did do a recommended re-calibration which did show and "increase and recovery" in lost range. The amount or range increase was deceptive because the amount of energy extracted from his battery showed very little improvement.