I'm not sure why CBS would do the book if it did not have some legitimacy in canon, yeah it can be written over onscreen, but why get a producer and writer for the show to write this if you didn't want to make it worth fans investment?
For the same reason they did every other Trek novel and reference book they've done over the past few decades: to make more money by selling merchandise associated with a popular series. They're not interested in continuity; that's the purview of the creators of the show. CBS is a business. They want to make a profit. And the market value of media tie-ins has never been dependent on their canon status. Some fans obsess about things like that, but most just want to see stories about the characters and ideas they enjoy, and don't worry so much about consistency. It's worth the fans' investment if it's enjoyable
. That's what this is all about. I'll never understand fans who treat this like they're studying for a test and have to get the right reference materials. It's not work, it's entertainment. It's about reading a book for enjoyment of its ideas. If another book offers an incompatible set of ideas, that doesn't have to detract from your enjoyment; on the contrary, it can add to it by offering another interesting variation on the theme.
You'll get no argument from me. I read ST books cause I like them. I cannot wait to read your new Ent series and if that contradicts 150 yrs I'm ok with that. I was just relaying what David told us on the show. Literary Treks is a place for ST book and comic lovers and authors to come together over something we all love. So I'm with you Chris, I read because I enjoy. We're hoping you'll come on the talk Rise of the Federation: A Choice of Futures, we are both very excited to read it!