If you want to reduce air travel for environmental reasons, then tax it more.
Shaming individuals doesn't seem to be productive or helpful.
Air travel works for people if the benefits outweigh the costs. The only thing that changes behavior is to change the costs.
And even if costs were 10x there are still plenty of people who will fly tons, because it would still be economically productive. There are always going to be people who fly 10x more than others, because certain jobs and roles simply require it.
You wrote one of the solutions as if it conflicts with the other one.
Let's raise the tax on an activity according to its negative side effects, while pointing out individuals that do a lot of it and dont take personal responsibility.
> Shaming individuals doesn't seem to be productive or helpful.
I don't see how much support from history for that viewpoint. Some examples of positive societal change driven in part by shaming individuals: drink-driving, civil rights, sexual harassment, automobile safety, the slave trade, McCarthyism.
> Shaming individuals doesn't seem to be productive or helpful.
I don't see any shaming. It was all matter of fact, free from judgement.