that means the director wants to be true to the script. If my memory serves me right, the alien said it'll be back like in 6 years or something like that. So we have to be patient and think realistically people.
noun
1.
a thin flexible strip of plastic or other material coated with light-sensitive emulsion for exposure in a camera, used to produce photographs or motion pictures.
2.
a motion picture; a movie.
Correct in that it wasn't shot on film. Everyone who reads the comment (including yourself) knows that Blade didn't mean "let the a thin flexible strip of plastic or other material coated with light-sensitive emulsion for exposure in a camera, used to produce photographs or motion pictures be a thin flexible strip of plastic or other material coated with light-sensitive emulsion for exposure in a camera, used to produce photographs or motion pictures", though.
The #2 definition arose in a time when all motion pictures were shot on film. It's been less than 20 years since the first major movie was shot on video instead of film. Use of the term "film" to refer to movies that weren't shot on film will probably persist for a long time, in the same way that people still "dial" a phone number, even though phones with rotary dials haven't been in common use for a few decades now.
In any case, the term "film" is now a misnomer for the vast majority of movies that have been made recently.
The usage and definition of words is and always has been fluid. The point of language is to audibly convey a thought. As you said, "the vast majority of movies" gets this label, and is excepted and understood by the majority, therefore the definition has changed along with countless other words in history.