Your response is correct, but there's a more fundamental flaw in the preceding comment: although both paragraphs are true in isolation, the implication between them is false. "The queue is _currently_ trending to infinity" does not imply "The queue will _continue_ to monotonically trend to infinity". Periodicity is commonplace in real-life situations; and while parts of Queueing Theory produces some insightful and helpful insights by ignoring it, care should be taken when applying them.