Our Department first became accredited in 1993. I worked on that one and each subsequent "inspection" until I retired. While it's really good to have, not having it does not impair a department in any way. Furthermore, I don't think the public really knows what it is nor what it means to have it (or not).
Furthermore, bringing inspectors from other departments, providing room, board, and a vehicle cost us almost $70,000, not counting the fees paid to CALEA (Commission on Accreditation of Law Enforcement Agencies). There were 5 officers who did nothing but "accreditation" for almost 2 months prior to the inspection, taking them away from regular duties.
While they may have lost their accreditation, they are no less a law enforcement agency by not having it.