The article's focus is: lump sum payment vs regular payment.
Program had three groups: $20/month for 2 years, $500 lump sum, $20/month for 12 years.
Lump sum allowed people to invest (e.g., to start a business) in a way that monthly payments didn't.
Monthly recipients often pooled funds in rotating savings and credit associations (ROSCAs) to provide a lump-sum-like investment ability.
Monthly recipients were "generally happier and reported better mental health" than lump sum recipients. Articles quotes speculation of cause to be stress related to investment vs the stability from having monthly payment.
"The researchers found no evidence that any of the payments discouraged work or increased purchases of alcohol".
While you're free to circlejerk about how the article shows how great UBI is, that's not really what it talks about.