In theory that sounds great, but what happens if everyone says "fuck it!" and just starts taking the basic income? I think it's fairly obvious that with nobody paying taxes there is not enough government revenue to pay and thus the system falls apart. Let's call this 0% workforce participation.
On the other hand, if everyone works really hard and is super productive and starts businesses and etc then at some point their market wages totally swamp the basic income and it's essentially un-needed and kind of a joke. And if that were to happen, prices would rise to the point where the basic income isn't anywhere near enough to live off of comfortably and it's existence is worthless. Let's call this 100% workforce participation.
There exists a whole spectrum of workforce participation between 0% and 100% and some of them might be stable-ish such that there isn't a positive-feedback loop that quickly runs society off the rails.
The problem that the champions of basic income haven't really addressed is that people fear the degenerate case of 0% workforce participation (or nearly so) and the mental calculation that people seem so able to do but which proponents of basic income seem to find impossible: where does this money come from? Why will I as a worker have to pay for things that non-workers get? Why do I not get to keep the fruits of my labor?
Ultimately money is useless by itself, and the economic system is one which allows us to divvy up the limited physical goods (the planet is finite, our ability to manufacture is finite, roboticized production lines don't operate at infinite speed, neither are they free, we still need SOME farmers, etc) to people. A system which says that everyone can have even if no-one works sounds an awful lot like a perpetual motion machine and thus people are skeptical.