You might be interested in https://www.theargumentmag.com/p/giving-people-money-helped-... which talks about the studies showing low effects for just giving money to Americans. It seems like just giving people money is still unproven to have impacts to make people healthier, happier (beyond the year they start giving money), get them better jobs, or improve their children’s intellectual development. There's still hope for targeted programs, but it changed my view on blanket payments.