The US lacks decisiveness ("you can always trust the Americans to do the right thing after all other options are exhausted" etc) but has the ability to mobilize (state capacity). We're just only good at one thing - war metaphors.
So we can't keep a lockdown going because that's not a war. But we can do vaccines great, that's just metaphorically shooting people.
>"So we can't keep a lockdown going because that's not a war."
I am not from US (live in Canada) but my impression is that the US population is in general way less subservient to the government comparatively to other countries. This could be just the reason you could not lock them up.
So we can't keep a lockdown going because that's not a war. But we can do vaccines great, that's just metaphorically shooting people.