traditional looking commercial jets, their designs, their manufacturing processes, their innovations (yes boeing/airbus do innovate and have for a long time even though it doesnt seem that way) have all been shaped heavily by human blood. to some degree a radical new design almost guarantees more deaths at a commercial level there's really no shortcutting this without it.
dont get me wrong im super open to the possibility that something like this is possible itd be better for the whole world, but there's no way we get there without re-experiencing some hard lessons if we want to push it pash some sort of proverbial finish line