You can already do that in most places by just applying for welfare payments and making a fake effort to get a job. The thing is that working a real programming job pays a lot more.
Zero users and loving it! is not necessarily hyperbole.
Again, this is how it works in most developed countries under welfare systems without issue. The majority still seek real jobs because they want to live above the base level of income required to live. A UBI won't be paying for your overseas holiday and fancy car.