Too Expensive
That article is a bunch of bull. The author must have been very bored.
I had thought about Disney building an airport, but it's just not possible. The cost of upkeep alone would put Disney under. The amount of fuel, the staff, pilots, etc. would be too expensive. The planes' price tags alone run in the high millions. In order to maintain the level of quality that Disney provides, they would have to charge outrageously high fares. If a family can get cheaper tickets from a much larger airline, like American, they would take that over Disney any day. Only diehard Disney fanatics would pay the high price of a Disney Air ticket. The number of diehards is low in comparison to the number of average vacationers going to Disney World. That small number of tickets alone would not be enough to sustain the airline.
The only possible future of this idea is to build, or outsource, a private service for people willing to pay a high price for the best Disney experience possible. Private jets or props would be the main form of transportation in an all-inclusive package including lodging and park tickets. This would be considered an elite service to those wanting a luxury trip.
Even this doesn't make since because it can be done now without building an airport. Disney created a cruise line, didn't they? Now, they should be able create an airline. It could run out of Orlando International Airport. However, the competition from other airlines would run them out. Again, back to the cost of upkeep, it still may not be possible.
It's a cool idea, but not gonna happen this decade. I hope that I may have to stick my foot in my mouth.