Yup. Much of the advocacy for UBI can be rephrased as "let's get rid of welfare cliffs!" given that mostly any sane (cliff-less) welfare system can be rephrased as a UBI plus a marginal tax/phaseout schedule. (Sometimes these are dependent on other factors like the presence of children, but you could also account for such variations in a UBI-based system if you really wanted to.)
If I understand the current US system correctly, if you are a single person who is able to work and simply chooses not to do so, you may not qualify for any welfare whatsoever. If that is correct, a UBI would surely decrease your incentive to work.
This thread is for asking any questions that might seem obvious, tangential, silly or what-have-you. Don't be shy, everyone has holes in their knowledge, though the fewer and the smaller we can make them, the better.
Please be respectful of other people's admitting ignorance and don't mock them for it, as they're doing a noble thing.
To any future monthly posters of SQ threads, please remember to add the "stupid_questions" tag.