“We should use planes less” is not “you mustn’t use planes ever”. Not every plane journey can easily be replaced. That’s okay. Near me there’s a flight that takes off to go a few hundred miles to the country’s capital each morning, and there are similar ones going much shorter distances all over the country. That journey could and should be a high speed train journey with suitable infrastructure
I feel like it has to, otherwise turning 360 degrees isn’t a turn