I think your definition of UBI is way too narrow.
Without Systems Engineering expertise and techniques, it's impossible to prove one way or another whether UBI will work, or what form it needs to take, to make it work.
Your story is far from being any kind of proof, it looks more to me like your own attempt to explain what you are imprinted to believe with no physical proof. And unfortunately this makes your output automatically information which adds to noise, increasing planetary entropy, you work without realising it for the beast emergent property in control of us, the beast that demands we never seriously question it. You are trying to gently persuade us never to question it, without you even realising this is what you are doing, it seems to me :)
Below is more if you are interested to know more.
Or for a better definition of UBI, check out "Kardashev Money".
https://eric-bott.medium.com/its-true-we-need-a-break-from-it-now-and-then-but-only-whilst-it-s-a-system-of-energy-slavery-d5689d8a1a36