> If they don't adopt UBI then some populist politicians are gonna raise a flag and grab some power.
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...)