I think he’s trying to phase it out. He’s using the principle that SCOTUS gave that you have to consider the reliance interests of the recipients. I think he knew that if he struck renewals down it would be immediately appealed and there’s a chance there would have been an injunction on his ruling: letting the program go forward until appeals. He did it to save face. He inflicted as much pain as he could while ensuring his ruling will stay. He says “for now” in his ruling.