But it's also very easy to convince virtually anyone that they're a part of the hardworking middle class that's keeping this country afloat, as opposed to those leeches that would use their basic income to hang around and do nothing.
Those leeches are the least of our worries.
How about long turn demographics? There are racial and religious minorities, that have 12+ children in an average family. A basic income may help them grow even faster, leading to inevitable huge changes in the society.
Also, I'm under the assumption that "leeches" basically just means poor people. I supposed if we had to be more specific, in America that means Hispanics. They are not exactly religious zealots, but are definitely making relatively larger families. That's just going to be the demographic reality in America.