I rewatched it a couple weeks ago and thought the same thing, there's even the 'red pill' lol. I haven't read it so idk how it compares to the movie, but it's based on a book by Philip K Dick who also wrote the books that Blade Runner, Minority Report, A Scanner Darkly, and a bunch of other movies were based on.

I think the acting helps to elevate the campiness of the movies, I think if they were more serious movies they wouldn't be as good lol