And it's commonly known that Lukas is a dick the way he treats expanded universe. Making bullshit story, like Forced Unleashed canon and dumpimg the majority of books... He has no respect for work of others.
He has the right to ignore anything written by somebody else because he created the universe. But he's not a dick, other than The Clone Wars, there isn't any other piece of media with a lot of input from him that has had so many contradictions to other material from Legends.
The decision to dump the material previously known as the EU to the Legends category was mostly by the Lucasfilm Story Group, Jennifer Heddle, etc.
George himself, while not overtly fond of Legends, did not give the final order for that execution.
The only thing Disney had officially announced as non-canon was the awful fanfiction that encompasses everything that is not the movies and Clone Wars toon. That means all of the comics and books are wiped out and rightfully so. The last thing we need is Disney being forced to follow someone's work just to make sure the movies work from a continuity standpoint. Now everything is off the table and they are free to write sequels and prequels however they so choose.
The difference between what most people consider ''awful fanfiction'' and the content created there is that for the most part, all those comics, novels, videogames, etc. did not aim to just do whatever the hell authors wanted to do with the characters for fun, but rather, give us even more stories with them without betraying who they were and expand the mythology introduced in only 6 movies, to further amplify the meaning of concepts such as The Force, the Dark and Light sides, the Galactic Republic, etc.
Dumping all of that was truly unnecessary unless they have very specific plans with the Pre-Republic and Old Republic eras, since those barely affect the time period of the Sequel Trilogy.
Some of the members of the Story Group were tasked with keeping it all together to avoid plotholes or continuity issues, and whenever anything new came out, it would have to undertake a thorough check and review to ensure it fit these guidelines. It was hard and passionate work, all in respect of George Lucas' vision and in respect of the fans' intelligence.
The one exception was anything George Lucas said or wrote, which could override anything. For this reason, there were several hiearchies of canon.
Now, however, that is no longer the case. If you hated that content, then you might not come to like what's going to come next, because novels, comics and videogames are still going to come out and now they will hold even more meaning because the hierarchies are gone, and now there is only one single, cohesive continuity. The movies are part of this too, and so, they will have to adhere to everything else as well. If there is ever a X-XII trilogy, whatever material came out that takes place after the ST will not be able to simply be ignored, they'll have to write a story bound by that.
There is no longer an expanded universe, now it's just the universe.
