OMgoodness! That reads like a parody of flying with a cello. Upside down? A net? Crazy. Nothing like that in USA. Note to self: Try not to be a cellist in Canada.
Also, an updated version of that article from Brian: Travelling with a cello as cabin baggage on Air Canada: a guide - BRIAN YOON | cellist
((We have though removed the seat cushion if need be. It is velcroed in place.))