These days, everything gets labeled as either "choss" or "not choss"—it's kind of absurd. For a route to truly be considered choss, it should have significantly more frequent rockfall than nearby routes. Labeling an entire climbing area as choss is equally misguided. Maybe the climbing isn’t enjoyable, but that doesn’t necessarily mean the rock is loose or crumbly. In fact, most popular “chossy” crags don’t even experience frequent rockfall.
At the same time, one hold breaking on a climb does not make it choss.
The definition of choss should be reserved for something that is nearly unclimbable due to shedding rock. Choss and bad are not interchangeable.