What definition of organizational health demonstrates this? Certainly none of the long-lived and powerful US unions have this property. Observationally, it seems that the strongest US unions also exercise their power to protect all within their fold. The worst offenders fail to be protected by the union, but in general, they are not purged. And US unions are quite powerful. The leaders wear Rolexes.

This seems logical. A labor union carries power commensurate with the number of members in it. It is more important for members that they be protected than that they be held to a high standard. If the latter is done, it is in service to the former. That is entirely the purpose of the union after all. No one forms a union so that others can hold them to a high standard of performance.