And they might currently exaggerate the impact the current expansion might have on lowering structural unemployment. Insofar as it can be reversed by higher demand, this would presumably happen only late in the cycle when the labour market is especially tight.
It would be quite a stretch to claim that the euro area has been in such a “high-pressure economy” up to now that would explain the recent notable downward revisions in structural unemployment. This is probably true for the economy as a whole.