This study should have, since those are key metrics for UBI in a projected robotics-era of job scarcity.

Since it didn't measure them it is pointless classifying it as a test of UBI.

No, it's not pointless. It just studies one aspect of the problem. Yes, this is insufficient on its own, but more studies can be done, which can be designed particularly to examine the other questions that need to be answered.

A test for lead is usefully classified as a water quality test, even though you need to test for other compounds as well before you know if the water is safe.