Quite what they are trying to achieve with that advert is totally beyond me!!!?
To generate a reaction. Which is what they'll get. Meanwhile in the real world, it's not going to happen and they know it. The two pilot rule will remain into the forseeable future. Perhaps one day the technology will have sufficiently advanced for airliners to be semi autonomous and require no more than a single 'pilot' to monitor the aircraft in flight.
Until then, probably around the time Ryanair are offering low fares to the moon. It's all hot air.