And he was publicly dressed down on his bridge by an admiral after the Hugh Borg incident; and although yes, technically Admiral Pressman was going to be prosecuted for his role in testing a phase cloak in the Pegasus incident; I don't think that made Picard a very popular officer among the upper brass either.I'm not arguing he would have been untouchable. But we know from literally all of TNG that he's a very influential leader in Starfleet who has friends at all levels of command. He was powerful enough to shut down Admiral Satie, for instance, and to hold onto the same command crew for 15 years. And he was famous enough that FNN treated him as the public face of Starfleet after the Mars Attack.
So to me, given his extreme level of informal influence within Starfleet, I just can't buy the idea that someone didn't call him up somewhere along the line and say, "Lisen, Jean-Luc, you didn't hear this from me, but you deserve to know: Ro Laren is back in from the cold."
I mean, I have a feeling if Picard had showed up at Deep Space Nine during the Dominion War, he would have had Sisko brought up on charges because Sisko was using the Romulan cloaking device in the alpha quadrant, which technically violated the agreement the Federation made with the Romulans to allow the defiant to be equipped with a Romulan cloaking device.
That's why I call Picard the show oony Admiral for Starfleet. The only thing he was really good for in their eyes was Federation PR. He wasn't much of a tactician, and in most diplomatic situations he didn't put interests of the Federation first.