I think it's the difference in application of EU lore vs. NU lore.
When it came to movies, it was because the prequels had good moments, and were fun. Nothing Disney's made, IMO, has any merits.
With the EU, it was always opt-in-canon. Something great? Canon it. Something shit? Ignore it. You lost very little by picking and choosing and very few things were interconnected, often the most being references and nods to other stories.
NU takes all of that and scraps it, then says "This is canon and you must accept it", so you can't ignore the stupid stuff, and sadly thus far there's been no funny-stupid ala Trioc stuff for us to enjoy and meme about. It's all either the ultimate in bland mediocrity or frustrating stupidity, like The Room vs. a Seth Rogen film.
The fundamental differences make or break it all.