Personally i think this collapse mentality quite dangerous, because it is paralyzing, like lets all relax that capitalism will fall by itself.
One thing that we must acknowledged about capitalism is that it is resilient as fuck, and when in crisis it will turn to fascism, and in the particular case of u.s, the elements of fascism, being chauvinist, reactionary and mass, is already part of it's culture by itself, the american exceptionalism, the ideas of the destiny manifest, the founding fathers and etc.
My take is, turn openly fascist, we are already seeing this on florida with it's bizarre anti-trans laws, squeeze it's "allies" even more, cause conflicts throughout the world to revitalize it weapons based economy.
civil war, i don't think so, perhaps some pockets of armed resistance from the persecuted.