Five minutes looking over the Legends section on Wookieepedia proves that's a lie. Hell, back by the time the Prequels were in production, the EU was using its infamous "Tiers of Canon" because of all the contradictions between the various forms of tie-ins and the movies themselves.
The "tiers of Canon" were never infamous, and the new system is essentially the same, with its own tiers. I'm assuming you haven't really read this stuff, or read about all the effort that was put into it, or are just repeating things. No other EU has had what star Wars did and does, especially with how large it was.
Lucasfilm has stated that the main reason they rebooted the EU was to bring back Chewbacca, and give the sequel trilogy a blank slate. They've outright said it. And they didn't plan on doing it initially, until plans for the sequels changed.
The Tiers were simple, for the use of writers, and show the degree of rigorousness that was going on there.
Lucas Canon-Movies, scripts, novelizations, etc. Stuff that George created or was the most involved in.
This is still the case now that George is gone. The movies take precedence, and all other material must wait for them.
Continuity Canon- every thing from around 1990 onwards, when books began being published. It cannot contradict "George Canon" because it could not be written before he established it. For instance, there were no prequel books or comics published before the prequel films were released. That timeline/era was off limits to the writers.
In the new EU, this is the equivalent of "Canon"
Secondary Canon- older material from the 80's. This material was made available to the writers for reference, and they could take a story or character from it, and add it into continuity.
In the new EU, this is exactly what "Legends" now is.
Noncanon- books or comics with an "Infinities" logo, or sometimes a "Tales of." These were "what if" stories, and not intended to ever be part of continuity.
In the new EU, there are still "noncanon" stories being published.
Nothing has changed, which is what authors who have written both before and after have stated. And all of this is besides the point that a publisher aiming for a tight continuity can make the bestsellers list over and over again.