Odd title.
The study observed associations between abundant availability of plant edibles and bears eating them. This was associated with eating less meat.
And the opposite was found to be associated. Lack of vegetation lead to increase hunting, actually measured as consumption via feces.
Bears being omnivores, this isn't surprising. Bears being lazy, will choose prioritize desirable plants (or sometimes honey, or likely increasing amounts of garbage, and road kill) over hunting.
The title seems to be a stretch and a prediction unsupported by the evidence.