This sort of "research" is often repeated with the substitution of "strength" for "mass". This can most often be heard being issued forth from those bastions of fitness information: personal trainers at chain gyms.
FoM... research is increasingly showing that high-rep sets can indeed build more mass than low-rep sets. It's all about delivering maximum overload to the muscles. Some people get more overload with high weight low reps, and some get more overload with higher reps, etc. Me personally, I'm somewhere in the middle, but more towards the higher rep side of things.