[Schroedingersat]

Nice argument. Except it's incredibly wrong.

Once recommended exercise thresholds are met, a durable bicycle is better than walking. Faired LEVs and light ebikes are better than bicycles. And full capacity mid speed (<200km/h) trains are better still. High speed rail is somewhere between walking and bicycles.

Maximise flourishing within a resource and energy budget. And if you invent a better plane or a lower impact energy source, add it to the menu. Do not blow the budget by an order of magnitude (or three) and then demand that technology fix the problem after the fact.