Mech originally characterized the “Alpha” pattern of behavior, and has subsequently (over the last forty years) modified this considerably. Science does indeed progress.
However, I hasten to point out that this is a case of inverted skepticism. The change in how we view animal behavioral biology since the 1960s to now has changed in all areas. Rumors that Mech is doing something odd here are clearly overstated. This is run of the mill progress of science.
Hat top: UO