Assume for the moment that Shinseki is a reasonably competent manager. Assume that when he took the job he planned on fixing the problems that he saw with the organization. Assume that he quickly recognized that he needed to fire 20% of the staff, eliminate the many excuses that the employees have to for not showing up for work. Assume that he could see how inefficient the workforce is in terms of doctor visits per day.
Now, assume that he wanted to do something about all of the above. What would happen?
Answer: In an Obama Administration nothing approaching reform would be possible. So nothing happens and it is clear that nothing is going to happen, with Shinseki or whoever replaces him.
So: If you assume that Shinseki is an honorable man they you should have read about his decision to resign quite some time ago.
You didn’t read about that did you. Draw your own conclusions.
and add to all you said that Shineki was dealing with a strong government employees union, a union which punishes members for good performance and encourages fraud (secret waiting lists).