"George Lucas has recently said the Star Wars books are not part of the canon Star Wars Universe. The only books that are the movie novelizations. The Star Wars books USED to be canon, but not anymore. So pretty much are published fan fiction now, like the Star Trek books."
That's news to me, as a hardcore SW and especially SWEU fan. Could you locate the source?
Considering GL took Coruscant from the books (the name at least, anyone want proof search the official site) it would surprise me if GL chose to relegate them to fanfiction. And as far as I know the Trek books don't have a strict timeline/proofreading check thingy the Wars books go through (although I know next to nothing about Trek so I may be wrong forgive me). As far as I know, GL has total rights to overrule anything in the books, but doesn't particularly care how others perceive them otherwise.
As to the EU novels, they had a few teething problems as they tried to locate the good authors (Jeter aside, man I just can't read his books), but the majority are sound (Zahn, Stackpole, Allston, Rusch, Kube-McDowell, Crispin, Wolverton, Tyers) vs the questionable (Hambly, Anderson, Perry) and the downright ugly (McIntyre [eeek!], MacBride Allen). Oh and I'm yet to read a bad NJO book, although they can be difficult to sink your teeth into.
To be blunt, even if GL was to tell me that the books were totally meaningless, I wouldn't listen to him. Ep 1 and the title of Ep2 tell me his mind isn't quite what it once was (or maybe we have grossly overestimated his genius). Anyone who says 'the dialogue isn't important' with reference (evidently) to TPM needs a strong reality check. And boy did he get it as his movie made.......hundreds of millions. Oh well.