I mean, Pocket's license is specifically tied to the film/TV franchise. They have to account for the new series, even if it doesn't have to account for them, which means they'll inevitably need to either course-correct or retcon. For that matter, that's been why they've been dragging their feet getting to Hobus, to see what the official canon has to say about that event.
The license has specifically forbidden them from getting as far as the events of Hobus. They haven't been waiting for the official canon. They flat-out couldn't go there.
And, no, they don't HAVE to account fro the new series. They'd just drop the outdated canon and start up with the new. No need to reference stuff that's been invalidated at all.
In fact, they've done it before.
New teaser trailer dropped! It is pretty good! Not much content in it other than he was an Admiral when he retired.
Leaving aside the novel discontinuity entirely (and, again, I never expected them to retain it), I have trouble believing Picard would ever have accepted a promotion to Admiral.
That said, i'm intrigued to see where this goes.