Is it possible that your wife was a little unclear, Maggie?
In a sense, yes, after RLE, and demonstrating, as Janet mentioned, that you understand the SRS procedure, adhere to the SOC, etc. etc. ad nauseum, I suppose everyone does get their letter. And being psychotic would probably keep the therapist from writing one.
In that sense, your wife is correct, but it's not like they have the things sitting in a stack in the waiting room-- as Janet said, they're not handing them out willy-nilly.
--EDIT--
But maybe some therapists don't take their job very seriously, and do exactly that.