Yes. If I read a Trek book, and then a later movie or episode contradicts the story I've read (or has contradicted the book before I've read it) the story is ruined for me.
So I take it that you can't bring yourself to watch film or TV adaptations of comic book superheroes, since those are always
contradicted by the canonical source material (i.e., the comic books)?
Characters like Batman, Superman, Spider-Man, Wolverine, The X-Men, Iron Man, etc. have all had retcons in the comics at some point or other, so to say that their movies violate the canon established in comic book form, would be in error. Most comic book heores who have been around long enough to have a fan base big enough to support a movie, don't have one "true" canon. Comic fans know that the movies are their own thing, and the comics are their own thing. Superman's origin has been told at least three or four times since John Byrne's Man of Steel origin miniseries from 1986, and it's never been quite the same as the original one was. I can't even count the amount of different Zorro movies Bruce Wayne seemed to see with his parents on that fateful night when they were whacked, not to mention the identity of the shooter has changed a few times...