No, it doesn't and I said Hickman slightly touched upon this subject, which is true as shown during X-Men #5:
The resurrection of Synch is described here especially the emotional and psychological trauma that comes with it after being dead for a long time, so I'm not sure why you think it contradicts anything, because that's clearly something that was mentioned during this issue.
The reason the team didn't change afterwards is because they don't have any memory of their deaths and of the whole mission as explained in X-Men #6, they're basically backup versions of their older self before the Orchis mission which means they don't have to deal with the trauma of what happened.
So yeah I don't think it has anything to do with ruining the buildup or the events of this mission, the resurrection protocols and the consequences that come with it, is most likely going to be something explored soon enough either during X-Men #7 and/or the X-Factor series.
This mission itself was also a failure in retrospect since Nimrod is already being built, the human who is building it is now hating the mutants more than ever because of what happened to her husband and one of the Mutant might betray them soon so this whole sacrifice may have been for nothing in the end. By trying to stop a future threat, the X-Men may have created something even worse and doomed themselves.