At some point, Disney made the decision to make sure that people who sat down to watch their Disney+ streaming service should get a warning about what they were going to watch.
Some of the content is understandable. For instance, in Dumbo, characters can be seen smoking cigarettes. In a children’s movie, it’s perfectly fine for a parent to maybe keep something like that in a context other than a kid’s movie.
However, some of the forewarnings are for a different reason. Disney decided to warn viewers that some of the movies they are about to view have “outdated” material within.