Jobs are racist.
http://www.princeton.edu/~pager/race_at_work.pdf
Start with a few unexamined wrong assumptions, select the data that fit your conclusion, dress them up with anecdotes and prose, and there you go!
(Of course you could set the basic income at whatever a minimum wage job would provide.)
It has some advantages over more traditional welfare systems. For instance it could be implemented with far less bureaucracy and would help improve labor mobility in the middle class by decreasing the friction of changing jobs and moving to different areas with better jobs (improving labor mobility would benefit the economy at large).
So I'd argue the open market in the US don't have enough demand for physical human labor at the bare minimum cost to keep people alive. The consequence is a lot of people are just not working. We have nothing for them to do at the given price that anyone is willing to pay.
So if the market has no unmet demands for toil, then guaranteeing a minimum wage job means you are wasting that persons time on some task that nobody needs done, at least not for the price he is paid, and you are not only biasing away the labor market you are wasting that persons time on some task that isn't valuable to be done.
Even if you have some market demand, the given rate is dropping annually due to the cheaper and more efficient automation of physical duties. I guarantee you once automated vehicles are entering the market and are legally allowed, there will be an absurd displacement of menial labor driving delivery trucks.
Other industries rife for that kind of displacement are farming (considering most farming tasks are procedural, automated farming machinery is practical, even if it needs high precision to harvest using computer vision), retail (with automated vehicles, you might as well buy all your goods online, shipped directly to your home, with no need for an intermediary store except in rare conditions like furniture and cars where you want to "sample" in person the goods), and construction (if you plant factory made homes, might as well build a foundation machine to excavate and lay a foundation without human intervention).
And then you have no use for human meat sacks moving their arms. We are already approaching that - it is why this problem even exists today. What happens when we get there?
When that happens, the human race will be able to retire -- communism / Basic Income will actually work in that world, everyone will be able to get the necessities of life, and the small proportion of people who are willing to work for fun, or unnecessary luxuries that aren't necessary for survival, will be very small compared to today's pool of human labor, but still enough to maintain the robots and do the remaining jobs that robots can't do.
In the mean time, we have to accommodate the current generations of people by subsidizing work. It's the only way to sustain our current paradigm and give people livelihoods, instead of leaving them desolate in the transition phase with callous explanations of technological progress.