Nonsense. Poverty level isn't $3000, nor is it a basic income - its peanuts. That's the amount to take them 'over the line' out of poverty. They'll still need the rest of the support they're getting or its pointless.
I think the point is that if a $3000 a year basic income program was implemented successfully it could lead to other programs being replaced with a higher basic income.
It's a step in the right direction and would make a massive difference, it isn't pointless just because it isn't a complete solution.