Circumnavigation?
Judging by the track, not really anything close to an unqualified circumnavigation. A near circumnavigation of the Antarctic continent is more accurate with the qualifier. If someone at the South Pole dances around the actual Pole, would that also be a circumnavigation? Qualifiers help to disambiguate.
Still, it's all good science and engineering, especially getting the balloon to maintain shape and altitude despite changes in temperature, even if the reporting is ambiguous.
Biting the hand that feeds IT
