It's surprising that you can get paid while being treated for addiction but not depression, you'd think they would have gotten up to speed on both at the same time. It is pretty much at the team's option, I gather. But in AH's case we just don't know what he's dealing with.
Obviously the surface difference is, injured players still get paid because the injury happened while playing the game. I don't even know, if you get cancer, for instance, do you still get a salary while being treated? Do you if you work for Amazon?
And yes, it's a job, but not everyone wants to stay in baseball no matter what, a la a Phil Gosselin or Aaron Alther. It seems a bit premature for Haseley to be in that place, and likely is, but if he imagines his career path being something like Cody Asche, for instance, maybe it's not for him, and you're not even walking away from that much money if your future is in white-collar work (like Appel, or even Schwimer).