This is not surprising. If I recall correctly, Disney sent people out to basically read and research all EU material and make the determination from there, what to keep and what not to keep.
I have no issues, because EU was not "George Canon" anyway. George had his own vision of what Star Wars would be (for good or for ill) and then the authors were allowed to do whatever they wanted. There is an understanding, at least on Lucas' and the authors part, that the movies and screen material would always supersede books, comics, novels, etc.
While I have enjoyed several books over the years and own many of them, if Disney wants to take it a different direction, more power to them. It doesn't diminish what has been done, or the books that exist currently.
It is funny, because I was just listening to X2 commentary and Eddie, or Brian, discussed the different time lines of the X-Men universe. Even "Days of Future" past is supposed to deal with discontinuity between First Class and X-Men. So, Star Wars really isn't anything different. There are different ideas and continuities that have been going since "Splinter of a Mind's Eye." Lucas never liked Thrawn or Mara Jade or Luke's marriage, so this isn't really new. It is just now official policy.
And, if anything, go buy old books, play Knights of the Old Republic, and call it good.
God loves you!