Thanks for the TLDR. As a layman, that sounds like they've discovered the mechanism by which it happens, not the cause as the title suggests. Why is there an imbalance of those antibodies in the first place?
I know they'll come up with some drug that blocks those antibodies from interacting with IL-10 and it will be great for those who suffer from this. But something has to be the cause, right? Something that itself can be addressed?