"Likely"..
Lets see the audit log of each time the phone was checked and what "working" means.
Does that mean someone stands in each car, using each phone to "call" and answer someone in the driver cab?
Does it mean someone just "checks" the phone is physically there?
Does it mean you pick it up and hear "something"..
Details matter and I'd be willing to bet there isn't a way to confirm by audit log or other proof it's done daily.
(and if a monorail pilot is reading this.. you might want to think twice about what your really signing off each day on..)
(fair disclosure, I've been thru unpleasantness and legal things involving Disney things in the past. I have seen first hand how quick the company is to suspend and place blame on the CM's. Which is why I mention these things that anyone who might be a monorail op reading this.. should damn well be bringing up to there union reps NOW!)