Nope.
A smattering of cinematically interesting scenes scattered across several dozen books does not a coherent movie make my naive and possibly deluded young padawan.
Good for you. Enjoy them all you want, that's perfectly fine.
However it doesn't magically make them a viable basis for a movie.
I wasn't directing that at you specifically as I've seen variations on the same basic argument from all quarters since TFA came out.
To answer your question: it's pretty much a double standard some irrational fans seem to have adopted. Typically those overly attached to the EU and mistakenly believe it has been stolen from them. *double checks bookshelf* Nope, still there!
To this day I've never been able to take much of an interest in the Legacy comic series. There's something about Luke Skywalker's grungy emo drug addict bounty hunter that I just don't find appealing, Go figure! It also didn't help that the basic premise and design aesthetic of the world left me cold. It felt too derivative. Shallow. Less like an original take and more like a lazy imitation of what came before. The narrative and stylistic equivalent of an essay that's been bought online and just had all the adjectives replaced with synonyms.
Oddly enough I never had trouble getting into that ToTJ comics that were the precursor to KoTOR and they had zero connection to the OT, beyond the obvious. No attempt to recreate the set-up or dynamic, no stand-ins for familiar characters or stories, just original tales of ancient Jedi.
For me a big part of the appeal was the way they presented it as high fantasy rather that sci-fi space opera, which ironically felt closer to the spirit of the movies than most of the material more directly associated with the OT. As a result though, it did make me somewhat resistant to getting into KoTOR since it swung the aesthetic away from the really crude, archaic style of the comics and towards something closer to look of the movies. Logically that should make it feel more authentic, but for some reason it took me a while to shake the feeling that it was an off-brand knock-off. As if Star Wars was plagiarising itself, if that makes any sense.