The issue here is not logic. Quite the contrary, it is all about image and partisan politics. Mueller's friendship with Comey is the perfect foundation for the usual charges of cronyism and bias for anyone that doesn't agree with the outcome of the investigation. Why start out handing that kind of ammo to the inevitable mob that will not accept the findings, no matter how well done?
But I look forward to the circus and to the resulting recriminations.
