Again, the difference between the American Revolution and the slave state secession is that the former had a solid moral and physical basis, and the latter did not.
Pretty obvious stuff.
You do not get to play "God." You don't have any right to dictate to others what reasons are "moral" and what reasons are not.
The Slave Holding Founders thought their reasons were Moral. The British Union did not. The Founders argument for Independence does not make it contingent upon the "morality" as decided by their oppressors.
Stop being obtuse.
Pretty obvious stuff.
If you have a childish and illogical understanding of the history. Children find a lot of stuff obvious before they learn better.