If you haven’t watched all of Picard, “All Good Things…” (TNG season 7 episode 25) and “Endgame” (VOY season 7 episode 25), please be advised there are major spoilers.
This may come down to a personal interpretation: did the events of “All Good Things…” ever exist? There is one reason I ask this: the false positive diagnosis of irumodic syndrome. The way I see it, the events of that episode are rendered non-existent.
Jean-Luc assumes prior to his death in season 1 of Picard that his illness was irumodic syndrome. However, it is never specified in that season that he has the illness. In season 3 Jack Crusher is diagnosed with it and assumed inherited. However by the end we learn it was a condition related to his time as Locutus of Borg.
In VOY, the future timeline with Admiral Janeway appears to be connected to the anti-timeline future from “All Good Things…”. The Admiral wearing the same uniform and badge. However the big difference is that the present day Prime Voyager is aided by future technology. We do not see the influence of Admiral Janeway get reversed, only the events of her future.
So did the events of “All Good Things…” actually occur or did the temporal incursion being fixed rendered it non-existent? After all, Q was testing Jean-Luc. Only Jean-Luc had memory of what happened. Sub-question: did Jean-Luc actually have a correctly diagnosed irumodic syndrome in the anti-timeline future?
Star Trek routinely alters the timeline of theorized major future events, so I would chalk it up to temporal flux.
Also, you’re forgetting the use of the uniform in The Visitor, an amazing DS9 episode.
I didn’t forget (now that you mention it). I’m blocking it. That episode is a bit difficult to watch or think of for me in recent months (loss of an immediately family member).