Citing the article: "In the near term – a timescale that matters enormously to climate change – the only way to decarbonise aviation is to fly less. As an option, that seemed plumb absurd until this year, when we were forced to learn how to live without planes."
If we've learned one thing this year it is that we can totally do a lot of things if we take a crisis seriously.
Managing climate change is about reconciling wants and emissions. It'll have to be resolved by reducing air travel a lot and pricing emissions (= making it more expensive) seems the most realistic today, even though it's not very democratic.
people will continue to want to fly. Climate crisis or not. I don't see, unless there's electric or hydrogen-fuel planes, how this can be resolved.