Maybe I misinterpreted what Feral was getting at, but at least from my reading of it, he’s saying the myth was ‘half-true’ in the sense that that propaganda was effectively sold to the lowly enlisted/conscripted men to give them self-justification to fight. Whereas the truth was indeed that the whole thing was just for slavery. The myth then became even more useful after defeat to help them accept it ‘honorably’. His conclusion about what people believe and feel ultimately having a larger impact than the actual truth seems to confirm that reading, but I could be wrong.
Just to clarify, I did not post this as an allegory for the election loss, we don’t need any myths to soothe our conscience. It just popped up in my subscriptions and thought it was interesting enough to post.
If anything, I think its conclusion about feelings and beliefs ultimately trumping objective truth is quite applicable to MAGA.