There is actually a moral aspect here. Morals in society is that you work to earn your own living and that you don't abuse kindness.
> This is not testing "unemployment benefits", it is testing UBI
No, this was testing a sort of UBI vs traditional unemployment benefits based on the two groups:
"The other group got it conditionally, with requirements to look for work, report to unemployment offices, and satisfy bureaucrats. And the money went away with employment."
That's unemployment benefits.
Again, it is obvious that the group who got money with no strings attached felt better, this does not tell us anything. It sounds like a contrived study that aims to prove that "UBI is better".
> your trivial "who gets a job fastest (any job, no matter how ill-suited or temporary)",
It's not trivial, it is the key metric. Granted, you could combine it with the "quality" of the new job that would also be useful, but since this is all to help people while they are looking for a job any studies and experiments must measure the impact on that otherwise there are missing the point.
Frankly I don't understand this cultish attachment to UBI its proponents tend to have.