No stated motion means no judgeable claim, so the practical consequence falls on my opponent: he cannot argue against a proposition that doesn't exist. A formal structure needs a subject and a predicate. Remove both and every contrary assertion becomes vacuous. If he names a resolution, I'll engage it directly and dismantle it. Until he does, the negative has offered no premise, no inference, and no conclusion, which is a failed proof by definition. The affirmative stands until a valid counterargument actually appears. That's not rhetoric. That's just the structure of the thing.