But that aside, all aviation accounts for about 2% of global emissions, with tourism only being a portions of that. What is your basis for claiming that the only way to avoid catastrophic man-made climate change is to significantly reduce air travel? There are so many more ways to reduce emissions, with much higher ROIs, and much less economic impact. Electricity generation and land transport are so much easier to make renewable. The idea that the future of the world depends on reducing air travel is simply laughable.
https://en.m.wikipedia.org/wiki/Environmental_impact_of_avia...
Combined with the fact that the global warming pie is made up of many small slices makes it one of the most significant slices of the pie.
Which significant slice of the pie is it on this graph [0]? It’s a tiny slither of the transport one. Most of that graph is just electricity generation split into different categories.
[0] https://www.epa.gov/ghgemissions/sources-greenhouse-gas-emis...
We don't have to completely stop global air travel, but we have to make it significantly more expensive. The price to suck all the carbon out of the atmosphere again is not trivial. Long distance tourism will suffer from this.