Human desire might be, but human ability isn't. If we don't raise the level of education everyone can get, and to a lesser extent even if we do, some people just will not be able to do any of the jobs that aren't automated - that's already true today. As I said before - our current solution, call them disabled and provide for them specifically, would have to be expanded, or UBI would solve the problem universally.

As to it being an incentive - if you provide a UBI as an incentive, you will presumably get people moving there to receive that UBI. When enough people have moved to the place and the incentive is stopped, it could easily cause huge issues as those people who moved will be relying on it.

It's probably only an issue if the UBI is high enough.