Interesting, thanks for elaborating.
In an animation movie somebody might hit somebody else, which appears funny to an adult. A child might just take this as normal behaviour and repeats it the next time she sees somebody and doesn't understand why it's not funny.
Understanding the real world is difficult enough for her.
My screensaver (animated colours) is problematic. Watching a video of herself or the grandparents on the smartphone can be problematic as well, but at least they are typically only a few seconds.
So yes, it's a thing of the medium. But most media for kids are colourful, highly animated, childlike characters and voices. Optimized to catch their attention for a long time.
Also, the media for kids are barely matching the level of the kids state of knowledge. I use words she understands describing things she asks me about, a TV show never does that.