You keep repeating this, but those ratings are not government issued and are not all that useful when it comes to general information. A movie can be made to be

You keep repeating this, but those ratings are not government issued and are not all that useful when it comes to general information. A movie can be made to be sufficiently sanitized for the target audience as there's plenty of flexibility in the topic and objectivity is often just a secondary goal. Eg since the movie is targeted at families, it'll avoid explicit depictions of sex. On the other hand, you can't just change the reality of what a scientific article on sexual reproduction is going to show, yet that information is not necessarily problematic for people under 18 to access (and of course you'll have a hard time balancing what is socially healthy with what is acceptable to parents). On top of all that though, we don't need to make even more things be behind this absurd age gate. I remember how ridiculous it felt turning 18, going from legally being a child to being a mostly free adult just on a specific day, despite obviously not having suddenly changed as a person in 1 day and having already been living independently at university thousands of miles away from home. Same again upon turning 21. This idea of sharp limits defined by age is just an intellectually lazy approach which is not how we should be treating access to general information for a fifth of a person's life. Tech companies love this kind of intellectual laziness, and similar thinking is responsible for why said tech companies are responsible for so many current social issues.