As best as I can decipher that, you're asking why they keep paying Tax Credits to the Unemployed. But the fuss is over Working Tax Credits, that only go to working people. Child Tax Credits go to any family with child aged under 20 earning below a certain amount. Current rules appear to pay, to a household earning £25,000 (before tax/ bills etc)), ~£200/year total for the first child and then about £1100/child for each extra child (I've tested this up to families of four children).
Child Tax Credit Rules aren't due to change. There has been some talk of capping it to going out only on the first two children, and the figures above show that there is some justification for this. Except that the children didn't have any say in being born and while £1100 looks like a lot it's still less than £100 per month per child, and can dry up fairly quickly.