Idk the discussions I have read about are basicly UBI to replace unemployment benefits, while not cutting stuff like public transport, healthcare, education and housing. The big advantage is basicly that unemployment forces you into work as soon as possible, whereas UBI allows for experiments, including the option of building something up yourself and it takes away a lot from the power hierachy in businesses. If you can just leave your job freely and be fine, then it is much more of an option. A lot of unemployment benefits do not work, if you just quit your job.