The challenge is that targets look smaller the faster you go. Small errors quickly produce deltas larger than the target. Hypersonic missiles, at least the ones

The challenge is that targets look smaller the faster you go. Small errors quickly produce deltas larger than the target. Hypersonic missiles, at least the ones we know about, are not like aircraft that can miss, turn around, and try again. They’re more like bullets, and it’s pretty well understood how hard it is to hit an erratically moving target with a rifle round.