I think the OP is saying that it's ok to blame, but it is not ok to just blame. It is preferable to also act in some sort.

For decades the world has very reasonably operated on the assumption that the world’s primary superpower wouldn’t be dumb enough to do this without a proper plan.

Everyone except the Iranians and maybe the Israelis were flat-footed by this, and the things that can be done about it are largely on the years/decades scale.