So, here is an article talking about why a certain moment in the the film was not earned: https://film.avclub.com/avengers-end...mom-1834366317
My opinion: I don't know for sure if it was earned. I do believe, however, that it was done because Marvel actually has no plans for all-female Avengers film (Was A-Force even a popular comic?) So, on some level, it was pandering.