That article doesn't look at if or how a MBA brings value. It mainly points out that a MBA is not a differentiating factor in easily finding a high-paying job, unless it was acquired from a highly regarded MBA program anymore. The reason being that, since MBA programs are money makers for their teaching institutions, they expanded like any rabbit population would do without predation, and with rabbits also getting into the Matrix, since you can earn a MBA from the cozy cushion of your pillow in your bedroom.