Hard for me to see anyone who says an American civil war is a best case scenario as not cheering for American deaths and I'm skeptical that this was written by an American as it sounds far too out of touch and 'wishcasty' as someone else said.
America has threatened to invade allies.
From the perspective of these allies it is better that American descends into a small civil war and sorts this shit out now rather than it keep simmering and escalting into a global conflict where more people including more Americans die.
I don't know exactly who you are referring to, which article/comment/?? do you refer to?
You are skeptical that it was written by an American, but you have no proof that it was not?
Do you know who did write it?
Those guys in the Whitehouse, are they not American?
They are the ones steering you straight off a cliff and quite literally anything - including civil war - could happen as a result of that.