One could make that statement about almost all Civil War Army Commanders.
True. But there were a few who abused the privilege. Like Braxton Bragg.
The Union had vast superiority in numbers of men, sophistication of armaments, ammunition, logistics, clothing (boots became scarce in the South), and food for the troops. By all accounts the Confederacy should have collapsed in 1863 following the losses in Gettysburg and Vicksburg, and the death of Stonewall Jackson. That they held out for almost two more years demonstrated the tenacity of men fighting to defend their homeland. And to those denigrating Robert E. Lee and seeking to tear down his memory, his greatest legacy was in persuading his loyal troops to go home after Antietam and not engage in guerrilla warfare. He did as much as anyone in helping to heal the wounds of a deeply divided nation. He will always be a True American Hero in my books.