I think you missed the point of my reply.

Vitalik sitting on non-private flights doesn't meaningfully add to pollution, the flight was already happening. The fuel was already earmarked for burning.

"This person boarded a lot of flights that were going to pollute anyways" is a strange take. Sure he did it a lot, but if an individual contributes no measurable impact by sitting on a plane, then boarding 300+ flights pollutes roughly the same as boarding 0, since those 300+ flights happen anyway.

If you want to argue about market forces, do that. But as a sibling comment said, blaming a consumer here is strange.