That's a fairy big chunk. Especially if you take into account that globally almost nobody can afford to fly.

The emissions from aviation are increasing every year, the majority of flights are for holidays rather than business, and only a very small minority of people globally actually take flights.

However, I belive the parent commenter was more pointing out the unfairness of picking and choosing what to ban rather than imposing a blanket charge on carbon.

This seems to have been missed by most, even when considering that the parent is likely correct that flights have a greater, and increasingly greater, impact on climate change than bitcoin does.

*historically contributed

Will contribute 6-10% of yearly emission in the coming years