Central banks have basically run out of tools to fight the next financial crisis. Quantitative Easing went to the banks and the 1%.
Interest rates are already low. Other than going negative (insane BTW) like some sovereign debt, there’s not much they can do on that front.
The next time a financial crisis hits (another year at most?) , they’ll resort to helicopter money. They won’t call it UBI, but the effect will be the same.