Think what you want.
And, at the time, the Confederacy did indeed want slavery, so I don’t know what you mean.
I also don’t know why you want to align your view of history with the left.
Look, I am tired of the romanticized view of that crime known as the “Civil War.” The facts are well known to anyone who gets beyond school book history and books written by followers of Harry Jaffa, which is where I think all of us started. As for alignment, I’m aligning with the facts, not some myth manufactured to make dictatorship, lawlessness, and war crimes look noble.