The framing allows everyone to turn their mind killers off, and the mission statement of entertainment means that concepts have to be presented so clearly that understanding them takes almost no effort at all, while there simply is no incentive to try to make anything sound profound.
… I continue to be surprised by and impressed with TVTropes’ usefulness when it comes to social issues. Thanks!
The framing allows everyone to turn their mind killers off, and the mission statement of entertainment means that concepts have to be presented so clearly that understanding them takes almost no effort at all, while there simply is no incentive to try to make anything sound profound.