Like how they failed to see that constantly pissing off everyone in the North who wasn't a outright abolitionist by whining about how slavery was a social good and would be phased out, then when some plans were made to help that, outright throwing a temper tantrum?
Or how leaving the Union when you're outnumbered and out industrialized by your neighbor, with the closest thing to a ally (Great Britain), probably not going to support you guys?
Or my personal favorite, how they failed to realize that their constant pushing and pushing of slavery was doing nothing but ticking off everyone who wasn't in the South, and then finally realizing that the chickens had come home to roost in 1861.
Fact is, the Southern culture was built on basically the white race being a hegemony of constant favor of stomping down on their slaves. And responding to any slights on their "honor" with immediate and violent retaliation.
So no, it's not a idiot ball, they would try shit like that in a heartbeat. This is just them trying it with the 500lb Doberman who's been bred specifically to chew off the balls of anyone who messes with him.