It is worth emphasizing that weak measurements only (and can only) apply to ensemble averages. They work by making weak measurements on many copies of the same

It is worth emphasizing that weak measurements only (and can only) apply to ensemble averages. They work by making weak measurements on many copies of the same system (or equivalently, many identically-prepared systems) and then drawing inferences about "the system" from this. But it is not, in fact "the system" but the average over many copies of a system. Bohr would likely have made a big deal over this, because there is no actual measurement on any single system that corresponds to the retrodicted inference, and that matters a great deal in Bohr's quantum ontology.