a bad game can be frustrating to play and take 5 times that length at minimum.
Besides, with something like media consumption, having an idiosyncratic system doesn't to my mind present any conceptual issue where it's necessary to interrogate it for consistency, so I'm a bit confused as to what motivates that kind of question.
With movies I didn't want to start in the 30's and watch all kinds of esoteric material that is mostly historically relevant, I just want to be entertained with a movie. Also, with movies it feels more satisfying to watch a classic in between other movies, instead of watching only classic after classic, so that's how I designed that system. With video games, I want all experiences to be very good otherwise I will just stop playing. It's just how I consume it and it's quite personal.
Typically randomness adds an exciting factor to the equation so I prefer it over deterministic systems, but video games are an exception here.