He’s right. Historically accurate.
Can there be a better source than Jefferson Davis himself, regarding the reason for secession?
Jefferson Davis’ Farewell Address
Senate Chamber, U.S. Capitol, January 21, 1861
Transcribed from the Congressional Globe, 36th Congress, 2d Session, p. 487.:
https://jeffersondavis.rice.edu/archives/documents/jefferson-davis-farewell-address
“It has been a conviction of pressing necessity, it has been a belief that we are to be deprived in the Union of the rights which our fathers bequeathed to us, which has brought Mississippi into her present decision.”
“She has heard proclaimed the theory that all men are created free and equal, and this made the basis of an attack upon her social institutions”
“just what the North has been endeavoring of late to do—to stir up insurrection among our slaves”
“for there (the Constitution) we find provision made for that very class of persons as property; they were not put upon the footing of equality with white men”
“when you deny to us the right to withdraw from a Government which thus perverted threatens to be destructive of our rights....we proclaim our independence, and take the hazard.”