Well, the Commission did say there was "no credible evidence" and that's what's being put out there for the puplic. It doesn't matter if there was more to the report because that one blurb is the direction the media wants to play it.
I think you nailed it. The Commission reaches the usual compromise between the parties, and the Democrats as usual ensure that the correct boilerplate is in there for the media to quote.
The media are still lying about the report, but the Democrats on the Commission have given them the means to do so plausibly, and as usual the Republicans have conceded an essential point.