Muller's failure to disclose a material fact--He had to know the Steele dossier was bogus

Elizabeth Vaughn:

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By the time the FBI’s counterintelligence investigation had been handed off to Special Counsel Robert Mueller in May 2017, the FBI knew, without a doubt that the dossier was a collection of lies. It’s hard to imagine the FBI kept that information from Mueller’s team. Even if, for whatever unfathomable reason they had, it wouldn’t have taken long for the Mueller team to learn for themselves. Mueller chose not to renew the warrant to spy on Carter Page after June, so they had to have known by then the information was false.

Given this knowledge, the Wall Street Journal editorial staff ask an obvious question? Why did the special counsel not tell America that Christopher Steele’s information was false?
The editors write:

Rather than take a hard look at it, Team Mueller made a deliberate choice to tiptoe around it. In his opening statement to Congress when he testified this July, Mr. Mueller declared he would not address “matters related to the so-called Steele dossier,” which he said were out of his purview.

This makes no sense. The Steele dossier was central to obtaining the Page warrant, and the leaks about the dossier fanned two years of media theories about Russian collusion that was one reason Mr. Mueller was appointed as special counsel. Mr. Mueller owed the public an explanation of how much of the dossier could be confirmed or repudiated.

It was a lie of omission rather than commission, but a lie nonetheless.

The Mueller report sidestepped the issue. Nowhere in the document does it state the dossier has been proven. But neither are we told that it had been debunked two years before the report had been written. Keeping this crucial information from the public allowed liberals to continue spewing their Russian collusion narrative. Having this knowledge would have ended the partisan debate on an issue which has divided Americans so bitterly.
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It was a deliberate dodge.  When Muller testified before Congress he said he didn't even know Fusion GPS's relationship to the investigation he was supposedly making.  I find that statement beyond odd since it was clearly part of the dialog about the allegations.  It has been asserted that Muller and his team knew early on that the Steel dossier was not a viable document and they dragged out their investigation anyway to give the Democrats a better shot at winning the midterms based on the Russian collusion hoax.