While the Child Tax Credit was a nice boost for parents at tax time, you had to have earned enough income to benefit from it. As a non-refundable credit, it meant you had to have paid tax during the year in order to claim it. So a low income family may not have been able to take advantage of the credit. They did not actually benefit from it. This will not be an issue with the enhanced UCCB.
The wrong approach to poverty reduction is to ignore the problem, letting the ideological conceit that a rising tide lifts all boats obscure the hard reality that many Canadians have no boat -- or access to anyone who has ever had a boat. The answer is automatic top-ups for those who fall beneath the poverty line.