"The left would have been better off if Fitz issued a report"
He couldn't. GJ proceedings are secret.
He may not be able to reveal details of the proceedings but he could lay out the issues - make a statement. Restate the law and say how serious it is. Say how "high officials need to be careful with classified info." Much of the press conference was a morality play anyhow. He could write a book. Everybody else does. Write a novel or fictionalized account. He could leak. Everybody else does. The weak indictment is going to backfire on the left and the MSM.
Rush has always said the left especially the MSM will regret they pushed for this investigation and that is likely how this will pan out.