I concur, though it’s fair to note that the PDSA loop / Deming cycle has an hypothesis embedded, in the form of a theory of action — “I hypothesize that changes

I concur, though it’s fair to note that the PDSA loop / Deming cycle has an hypothesis embedded, in the form of a theory of action — “I hypothesize that changes X to the system/process will result in outcomes Y.” Not the same as inference to the best explanation, but not unrelated.