Earlier quoted context omitted.
This is the optimistic take. The reality is they will find some way to cull the unwanted poor. These elites in power are stupid, cruel, spiteful, and have no sense of decency.
If they don't adopt UBI then some populist politicians are gonna raise a flag and grab some power. They don't really need those lower end resources anyway. I think they are OK to give them away just in case.
Only in a democracy.
China has elections, but is also a one-party state. Given the culture (thinking in terms of the group rather than the individual), I think they may actually want UBI anyway.
America is a democracy right now, but such things have been known to change before. Doesn't even need to be all at once — say the US disenfranchised convicted felons, that would mean the sitting president wouldn't be allowed to vote… and because I google before posting comments, wouldn't you know it, this is already a thing the states do: https://en.wikipedia.org/wiki/Felony_disenfranchisement_in_t...
(I don't know how accurate the book title is, does the average American really commit 3 per day? https://www.amazon.de/-/en/Three-Felonies-Day-Target-Innocen...)