Yes, indeed. This again is consistent with the Canada child benefit, for example, where it is garnishable for the purposes of family orders and agreements. Without this addition in here, you wouldn't be able to use the benefit to get payments from a parent who isn't providing the support payments they are required to pay by law.
The one other thing about “recovery” we would specify is that normally this is dealt with under provincial common or civil law and not federal statutes. That's another element that's different in this situation.