The entire movie was made by people who don't play computer games. It's a bit like a slightly better version of "Pixels". Adam Sandler, too, never played any games aside from what he had to for that movie.
Compare that with Matthew Broderick who got the producers of
Wargames to set him up with an arcade cabinet at home so he could "train"
I haven't read the book so I don't know if the stupid "easter egg" thing is in there too. I mean, the literal egg that they show in the movie. Because that's when I said to myself, yup, nobody who ever played a computer game was involved in this.
It's weird though. It's 2018. You ought to believe that we're at a time where movies about gaming should have someone at the helm who has at least a little bit of experience.