This is what I don't get, I think. Yes, having books that are set in a different continuity to the series would be confusing. But everyone here seems to agree, vehemently in many cases, that that's okay. Because I suggested the idea of existing books having to be pulled and everyone went "don't be stupid". So we all seem to think it's fine having those books out there for sale. As long as they were written before the show contradicted them.
We are also fine with new books coming out that contradict the show as long as they were commissioned before the show aired.
But we draw a line at books coming out that contradict things after the show came out. And yes, I know that's the way it has always been in the past. But things *are* different now. New books used to matter more as they were the ones front and centre in the book shop. Now everyone buys stuff on Amazon or elsewhere online and the latest book is indistinguishable from the book released five years ago, other than the publication date.
So sure, it's probably that the contract between Pocket and CBS is the same as before and they're not allowed to release new books that contradict on screen canon in any way. But it's also possible everyone used some common sense, agreed that they were their own thing, agreed that no-one really knew where Trek TV was going over the next five years, and agreed that as long as the books didn't actively break the broad strokes of the shows they could continue to operate. Maybe that was a bone thrown to Pocket in exchange for limiting them more on how they tie in to Discovery and other new shows (where it's much more problematic as you don't want a book out for a *new* series with a much higher profile that you then want to contradict on screen a year later - that's when it really gets confusing).
I do get that this isn't how things were done before but also I don't really see any benefit to CBS of placing such a severe restriction on the novels in the modern marketplace. I *could* see the benefit if they also asked for historical stuff that was contradictory to be removed from sale, but that won't/can't happen. Now it's perfectly possible CBS don't give a damn and no-one actually thought about it. But maybe in the long time it took to sort the agreement someone actually thought it through.
(As for Pocket being in too weak a position to negotiate like that, apparently CBS waited a year for Pocket to get their house in order rather than going straight to someone else, so clearly Pocket have some clout...)