Was the Mio Link optical heart rate monitor already been given up by researchers at the University level in the year 2014, when DC Rainmaker had his first look at it?

This is the hypothesis of Peter Gamma from www.petergamma.org, who studied the reviews of DC Rainmaker during the last 10 years as well, but stopped doing this after he had a closer look at the scientific papers which are available about consumer grade optical heart rate monitors: DC Rainmaker started 10 years ago reviewing optical …