By definition Disney Star Wars is fanfiction because it isn’t from George Lucas. So i’m not surprised.
I haven’t seen Book of Boba Fett it or Mando for that matter beyond the Luke Skywalker episode and the first season episode 1.
Filoniverse is fanfic its always been. Its never been on the level of Star Wars 1-6. Even though Disney elavated it to such a canon status.
By no means is that condemnation the EU was also fanfic and so is the new EU.
I think that only the works from Lucas should be seen as canon, even bad ones.
I like Filoni fanfiction to a certain degree. I enjoyed Clone Wars and Rebels.
I completely agree with you on all of this except The Clone Wars since Dave Filoni has said that George considered it part of his canon alongside Episodes I-VI. Sam Witwer has also confirmed multiple times these are George’s last Star Wars stories. So while I do think they have a lot of the Filoni touch to them and may not always be up to the quality of the films they’re still George’s stories.
I recommend these interviews. They’re very insightful.
Dave Filoni:
Sam Witwer:
Rebels is probably the only Disney era content I like without much stigma. It mostly all works for me and barely doesn’t. I hope to give Bad Batch a chance after I finish The Clone Wars.
I’m not brave enough for watching any further live action Disney Star Wars … currently.