You don’t think Jefferson Davis suspended habeas corpus throughout the South, presided over widespread oppression and extortion of Southerners and generally ruled through a reign of terror in Dixie? Lincoln haters make much of his “tyranny” but the worst prospect a dissenter could usually expect in the North was a possible visit to jail and that only if his activites posed a strong danger to the war. In the South, a dissenter better have been ready to run because he was in danger of the hangman’s noose or worse. Hitler, Himmler, Stalin and Beria would have proud of the Confederate police state.
Actually, no. While I think the CSA was one of the worst causes in history for which to fight, the issues you list were not among the reasons.
I don't believe JD ever got a suspension of HC throughout the South. Too much resistance from CSA congressmen and governors. In fact, GA and NC governors, among others, quite openly and successfully defied him.
For the CSA to survive, it had to at minimum recognize that survival trumped civil rights of (white) men. It was unwilling to do so. It fell, killed as some said at the time, by a theory that states and civil rights trumped all.
There was plenty of oppression of opposing views in the Civil War south, but most of it was driven by popular or state action, not CSA.