I looked at the movie as a fun romp that's a bit inspired by the book and that makes it bearable. The movie took the nerdiness down in a way that was very unrealistic, but understandable to the general public. Anyone actually in the nerd community knows that people find shortcuts and glitches, and do speedrun records competitively; but they removed the entire part about the first key being in the school area (where it would be attainable by all for free) and instead make it "Oh, I was supposed to drive backwards in this race that I need a very expensive car/weapons for"

It's a very pretty movie with a lot of fun Easter Eggs, but you've gotta separate and realize it wasn't made for them to enjoy it.

I haven't read the book. But the movie is indeed really terrible.