The story that comes after UBI and other forms of socialism is that humans are greedy and terrible to each other and institutionalized theft only makes greed and corruption worse.
Oh, and the funniest part is it will look initially like a good idea because it will probably improve the lives of those who are given money in small and rare cases, and the positive effect will dwindle the more universal it becomes.
A wiser move would be to teach others how to compete more effectively, but that doesn't sell as well as free money. The people doing these programs aren't stupid and I think it is our generation's "Let them eat cake!" moment. It's certainly good marketing to do so, and I think they believe it will truly make a difference.
One last thought on my silly little rant, "Do you think Mark Zuckerberg or Bill Gates or Warren Buffet should get UBI paid out to him?"