You never see anything from the Supreme Court with an ink signature from a Justice-- not in Orly's case, not in any case. All you ever get is a letter from the Clerk of the Court (who is a permanent official, not a Justice's law clerk-- Orly seems to be confused between the two positions), saying that the Court denied a motion or denied certiorari.
Wouldn’t that have been pretty easy for a law clerk to simply explain to somebody who asked why there was no signature?
Do you have some examples of this that you could show?