True but there's a lot of benefits that BI proponents (and I personally) believe will happen that will show up in subsequent generations like closing the educational attainment gap between the poor and everyone else. Also there's the question of if it's sustainable in case the fears of it just making everyone drop out of the work force are true. [1]

[1] Though from the same people you'll hear that work provides so much meaning to life that if people aren't working because they can live without it that they'll just be miserable. Which seems to contradict itself, either work is so meaningful that without we're miserable so we'll work even if we don't have to. Or it's not that meaningful and we'll be fine without it.

> You don't need a generation to study basic income.

Yes, you do. BI will change mating patterns and child-rearing patterns and the consequences of those changes will not show up for a generation or two.