^It doesn't effect my enjoyment of the existing works, it just seems to go against the point of something being a series, that a new installment be in line with and build upon what the previous sequels already did (especially since in SW a lot off writers were already able to do so).
I believe it used to be all canon, although with the films indeed being more so, aside from Infinities and possibly the Marvel comics. I think that for so long especially the novels, comics and games but also even the new films were so consistent with each other, the contradictions being few and minor (yeah Ahsoka Tano was a big one), was a big accomplishment that makes disregarding a lot of the existing work real annoying.
More to the point, as has already been stated, they're not "decanonising" anything because it was never canon to begin with. Hell, the EU could never keep things straight anyway, which is why there's that anal and ridiculously ungainly multi-tiered canonicity scale.
I believe it used to be all canon, although with the films indeed being more so, aside from Infinities and possibly the Marvel comics. I think that for so long especially the novels, comics and games but also even the new films were so consistent with each other, the contradictions being few and minor (yeah Ahsoka Tano was a big one), was a big accomplishment that makes disregarding a lot of the existing work real annoying.