The issues is if the tent obstructs the cabin staff from providing assistance. Simply saying that "it is on the individual" isn't going to stop the airline fro

The issues is if the tent obstructs the cabin staff from providing assistance. Simply saying that "it is on the individual" isn't going to stop the airline from getting, and possible losing, a lawsuit by the family when the passenger dies or suffer hypoxic brain damage, and the cabin staff says "we skipped (or delayed) offering him assistance because he was wearing a tent that would have significantly impeded our ability to provide assistance to other passengers."