A large proportion of Quebec immigrants are selected by the Government of Quebec. They primarily have dealings with the Government of Quebec, and any involvement they have with the federal government concerns health and safety issues. In this context, it appears to me much more logical to hand over these sums to the Government of Quebec and let it provide information to immigrants, as other provinces would be doing in the rest of Canada. Since the Government of Quebec is the main interlocutor in that province, it is up to the government to take charge.
On May 28th, 2008. See this statement in context.