Disney+ show-runners obviously feel free to ignore the post-2014 “canon” books. After abolishing the EU, Disney initially claimed that all new Star Wars media (books, movies, shows, video games, etc.) would fit into one unified, consistent canon. But in practice, Disney behaves as if the old Lucasfilm tiered canon levels (G-canon, C-canon, etc.) still exist. Essentially this means all the books/comics/games are a lower-level canon that is only valid when it doesn’t contradict the higher-level canon of the TV shows and movies.

I mean, officially it’s all canon. But you know it’s not.