No one dismisses the concept of banking because of bad banks or startups because of say Theranos, so why must unions live up to this mythical status of a perfe

No one dismisses the concept of banking because of bad banks or startups because of say Theranos, so why must unions live up to this mythical status of a perfect organization? There will be bad eggs so blame them. Using that to demonize unions as a concept is ideological and disingenuous. Business and industries have industry groups and lobbying groups. Professionals like lawyers, doctors, architects and engineers have their own groups. Why would everyone in the system need protection and safeguarding of their rights and interests except workers?