Just to clarify, the measurement is POINT 5 percentage points... (.5) not (5).
And you’re right, this is utter and complete horse crap.
This reminds me of the Jan. ‘96 economic report that claimed that the nation had gained 700K jobs in the month of December. Everyone knew it was bogus, and in fact Robert the Fourth Reich essentially admitted they had guessed.
No difference here. Except of course add that most are part-time and many more have dropped out to give that figure.