There are two problems with universal basic income: 1/ Many people think UBI is a great idea but everybody imagines something else. This makes discussing UBI very difficult. 2/ Regardless of what version of UBI you personally support, it is probably not a good idea to give money to those who don't need it. Sooner or later people will realize that what they really want is tax/benefit reform, not universal basic income…
This was intentional. The idea being it's harder to take away a benefit that everyone enjoys, and fairly easy to take away benefits solely for "the poor".