I haven't seen those particular rationales put forward. From our point of view, the act and the bill remove a condition or a part of a condition that would apply a penalty. So it's facilitative to provinces. It gives them the flexibility in their own jurisdiction to set residency requirements if they choose to do so.
In terms of your question around incentives, certainly there isn't a cost savings to the Government of Canada for social assistance. Social assistance is delivered by the provinces. If there were fewer unfounded claims or claims that were later withdrawn made in Canada, presumably there would be some savings there. But I hadn't heard that those were being put forward as the rationale.