 Yes, even though it's not an official precedent from the U.S. Supreme Court, because it was only Justice Thomas' opinion in the immunity case, and no one else joined it, and there wasn't an issue in that case. But he basically raised this issue and pointed out how he questioned the legality of appointments and suggested lower courts, such as Judge Cannon, should take up the issue, and indeed she has. In fact, she invited amicus briefs, friend of the court briefs,