It is in order for people to know who the Post Master General of the United States is given that he is a public servant paid from taxes collected from the people. Again, given that his duties are not classified, why would anyone serving that post hide behind the tittle.
While I realize why the opposing side of this argument feels that the identity of the postmaster general ought not be publicized, as they say it opens that person to ridicule and criticism, as it would lead to needless burden, I feel that, unless the person's safety would be placed in immediate jeopardy by revealing their identity (in the case of undercover agents, etc.), the public has the right to know who they have indirectly appointed to the aforementioned position and are financing.
In an ideal society with freedom of speech, nothing should be immune to ridicule. People ought to have the prerogative to satirize or draw attention to whatever they feel is dysfunctional in society. The undue burden that may be inflicted upon someone in a position of power is merely a consequence of their performance, and they ought to be open to constructive criticism and feedback, while some people abuse this privileged to berate people they disagree with, this, system as a whole works. When people do not know the identity of the person in power, then nothing can be done if the person acts greedily, or not in the interests of the people whom they govern, and this would lead to a travesty, in that people cannot come into contact with the person in power and give them constructive feedback.
People do not need to know the postmaster general of United States is. While it would be a good thing for people to be more in tune with civics and what positions, the reality is the average American is incredibly stupid when it comes to civics and knowing these things. Most people don't even know who the Vice President of the United States is. Sad commentary on what we are as a nation.
Though we as a public tend to create celebrity on a whim, not every important position in government or media should be well-known. Sometimes the intense scrutiny and criticism that public positions receive is debilitating, and shielding some officials from this unnecessary burden is ok. That is not to say that they should be exempt from scrutiny, but just that they do not necessarily have to publicized.
The Postmaster General is the person who is in charge of the United States post offices. I don't know who it is and it has never effected me. Just like every head of a company he makes important decisions but it isn't a necessity to know exactly who it is.