I'd like to know how many air miles are used globally for business versus leisure. But the larger point is that business travel is mostly pointless. You can attend a meeting remotely. You can't hug your mother remotely, or sit on the beaches of Tulum remotely.
This appears to be global (but lacks a citation), and claims that business passengers are 12% of passengers.
People flying around is not just good for businesses and economies, people visiting other places is cultural exchange. Do you really want people to be more culturally isolated?
But make it 5% to account for underresearched impact of stratospheric emission.
There are much worse polluters, sure, travel is a contribution to greenhouse gasses, but I guess fuck people for wanting to take a plane somewhere
Though the tax is small, so this seems more like a money grab than anything else