That could've taken up no more then 30 more seconds of movie time. (firstshowing.net)
Hell, Anderson doesn't even show up until literally the final few seconds of the movie. (rowthree.com)
As one prominent cameo in the final seconds of the movie's first trailer revealed, it isn't just the video games of the 1980s, or even the 1990s being used to populate Ready Player One's world. (screenrant.com)