The notion that entertainment can erode critical thinking abilities and the push for positivity in media are complex topics worth exploring.

While it's true that excessive consumption of entertainment media can have some negative effects on cognition, the relationship between entertainment and critical thinking is more nuanced than you've presented. Here are a few points to consider:

* **Not all forms of entertainment are created equal**: Some types of entertainment, like documentaries, educational programs, or critically acclaimed films, can actually foster critical thinking and even promote intellectual curiosity.

* **The impact of entertainment on cognition depends on the individual**: Research suggests that people's cognitive abilities and preferences for certain types of media content are highly personalized. What might be detrimental to one person's critical thinking skills might not have the same effect on another.

* **Positivity in media can have benefits**: While an overemphasis on positivity can be problematic, a balanced approach to media consumption that includes both positive and thought-provoking content can have benefits like reduced stress and increased empathy.