The term "predator mindset" was specifically selected to contraindicate a "prey mindset". I am guessing that the people who are taking a trip down pedantic lane have not actually read Rory Miller's texts.
Yeah, it's a bit pedantic, but this kind of romanticization of animal behavior is just stupid. Like that guy who ran around talking about how gentle bears are until one tore his face off.
And it would be just as wrong to say that bear was vicious as to say it was gentle.