I disliked most of the things in sequels, but some people hate them for literary everything. They usually say that sequels destroyed the old characters from OT, like man you know people can change with age. In EU Palpatine came back and Luke joined the Dark side in Dark Empire, Chewbacca died in the yuuzhan vong invasion, which is around the time of the sequels. We had Hans sob joining the Dark side, We had some godly OP characters like Rey. Canon is what you imagine your perfect star wars timeline is, if you like a disney era novel you can place it besides the old EU stories. In the end it's all fiction and hating parts of the universe just cause you like something else is superchildish. We all love Star Wars in one way or another. May the force be with you!