I get it now, it's not required unless it's actually the jumpseat. I still completely disagree with the attitude that, because it may not be required to stop by on some airlines, the default becomes not to stop by. It's the other way around. It's "you must stop by unless told otherwise". I sincerely doubt that bypassing the cockpit on an airline like delta that has a written policy of not needing to stop by will score you any points with the crew. I imagine there might be a little discussion between the captain and the jumpseater, no matter the policy.