I always felt sorry for the sidekick as a kid. They never got their due and it left a very bad taste in the mouth - they are defined by a subordinate relationship to someone else. I always felt like a bit of sidekick when I was a kid and it didn't feel fair.
We can now have action movies with two stars where one might be African American and one might be Asian American. One of them doesn't have to be white and the other one doesn't have to be the ethnic sidekick. We're way over that. And I think it's happening in society too.