There is a persistent myth held by many southerners that the reason for secession of the southern states was “states rights” rather than slavery.
Here is a link to the secession declarations of Georgia, Mississippi, South Carolina and Texas. All four clearly state that the attitude and actions of the northern states toward slavery is the precipitating cause of the secession. The South Carolina declaration even goes so far as to say that states do not have a right to prohibit slavery within their borders by ignoring the Fugitive Slave Act. So much for “state’s rights”.
No matter what a person’s attitude is toward modern regional politics, perpetrating clearly nonsensical historical myths doesn’t serve any good purpose.
So if you’re doing it, stop it.