Mike Okuda can alter the canon during Remastering; therefore, he is still creating the canon, if only in the tiniest ways. He did replace the Okudagram in "The Naked Now" with one of the TOS ship as opposed to the TMP ship. He did replace the Clare Raymond family tree, thus providing us with a number of canon dates. All that is canon and it was created recently, not in 1987.
And I'm not saying that I need a license for imagination in general, but I do need one to create official, licensed Star Trek. Fan-fiction is only being tolerated by CBS, presumably for good PR. Most writers of original works aren't too thrilled about it. However, reporting on a text and analyzing the text as written, without contributing anything original to it, is as legal as literary analysis. I prefer to remain in that realm.