The reshuffling of the government is a tool that is given by the democratic system in the same logic of an option given to the CEO of a company to replace whoever does not meet the qualifications/ standards for a position with someone else.
That means, when used properly, than a theory has not become action, therefore there were responsibilities that were not seen to, services that were not given and mistakes that should not have been made and as such the incapable or underhanded employee is changed with someone else who is able and proper.