<<<Having an outsider come in, and fix things does nothing to help the elected officials learn to do their jobs.>>>
Once an EFM is appointed, extra powers are given that are not available under normal operation. It's not a matter of helping elected officials "learn." They don't have the proper authority.
For example, how could elected officials possibly deal with 48 separate union contracts which obligate the city to pay considerably more than it has. None of these unions wants to step up and to be first to make a concession? So it doesn't happen.
But with the powers of and EFM contracts can be rewritten. The same would be true with a bankruptcy, however, it is believed an EFM can resolve the problem more quickly, fairly, and efficiently than a bankruptcy court.