Dr Manhattan (Blue naked guy) from Watchmen was aware of every moment of his life, always, but just because he knew a moment was coming, he couldn't skip any of it, because "Every one has been the Scarecrow".
Either Q is like that, or something weird is happening.
Q can't be responsible for splitting the time line because he has no powers by the time it splits, which is something he should already know as he's screaming at Picard in episode 2 about penance.
How do we know that?
Q had his powers in episode 2 because he kept flashing in front of Picard and vanishing... he also made himself appear only to Jean Luc (and no one else) at the time.
Q DID appear 'not well' however, and its possible that the creation of the Confederacy (aka the time split in 202) had something to do with it.
If Q wasn't responsible for changing the timeline... then WHY was he in 2024?
Why get himself involved with Renee Picard and Soong?
Granted, it IS possible that Q might be trying to FIX the timeline to ensure UFP comes to be... but I find this very unlikely.
Oooh I didn't think of this. So maybe Q's manipulations aren't nefarious? Still, he did say "The trial never ends." Also he denied doing anything when Picard accused him. And yet he said he looked for the "nearest explosion" when he wanted to see Picard again.
While it IS possible that Q might be trying to bring about UFP timeline... the problem here is... he never had much of an interest in helping Humanity apart from setting up tests for them.
Unless that the time split affects the Q continuum negatively and Q is sent to the past to make it right.
Problem here is, we don't have an indication that this whole thing is a predestination paradox... meaning that Picard and his crew couldn't really cause the Confederacy timeline unless Q messed things up in the first place.
Because, the gang only went back in time when the timeline was altered.
Q did say that the Confederacy was a world of their own making... but how?
Picard and the lot exploded in the UFP timeline after encountering the new Borg, and the only reason they found themselves in their Confederacy counterparts bodies was because of Q... so how would they have had a chance to affect the past if Q didn't mess things up in the first place?
Even in All Good Things, remember that while Picard was technically responsible for causing the anti-time anomaly, it was because of Q he went looking for it in the first place and ended up creating it.
So it was Q who caused the issue... and he DID admit to Jean Luc he got him into this entire mess too.