Maybe so - but you'd need another full century of moral decline to really make that happen.
Fortunately Yankees of that stripe don't own many guns.
I believe that the differences, both culturally, and economically, were so distinct, war would have happened without slavery being an issue. It still wasn't the main issue regardless.....
You'd be surprised how many yankee types like Hillary and Schumer are armed while disarming the New York State citizens and throwing some in prison even (before arresting criminals).
btw, it is my theory that if the south chose to secede again, that the "oh so wunerful,wunerful damnyankees" would be so busy:
raising taxes,
hating guns,
hating hunting/fishing,
taking dope,
engaging in every possible sexual perversion,
murdering the UNborn,
fearing pit-bull dogs,
being "vegetarian or vegan",
looking for more ways the "help the less fortunate" with MORE FEDERAL PROGRAMS,
banning smoking,
being ANTIsemitic,
being "PC",
& generally making JACKASSES of themselves,
that they would NOT notice we WERE GONE for 3-5 years.
free dixie,sw