Unfortunately, if you hand someone with poor money management skills a bunch of cash, they may end up with all of those luxury items & no food on the table.
To me, that sounds like hearing someone saying "I'm genuinely concerned that people will start giving their kids strange-sounding names." Sure, it's a bit odd, but so what... it's not affecting you.
Maybe you are concerned that they will fail to contribute to the economy, thus dragging it down, but if so then I wonder what you think of our current economic system which leaves a noticeable percentage of people unemployed. Maybe you are motivated by the classic Protestant work ethic and think failing to work hard is a sin, but if so I'm not sure why THIS sin is one you need to worry about in others rather than in yourself.
And at this point I should stop knocking down straw men, and wait to hear why this actually concerns you.
It concerns all taxpayers, since they're the ones paying the bill for basic income.