It's not uncommon that a film have a theme. In fact, it's expected. You watch the film, you digest the plot, and you come away with the idea that, "This was a metaphor for this particular idea."
With CHARLIE'S ANGELS (2019), the theme is explicitly stated up front, and then slowly moves on from there to hammer that idea home. And that idea is this: Men are bad.
In this Elizabeth Banks take on the CHARLIE'S ANGELS franchise, the Townsend Agency has been taken international, just as John Bosley (Patrick Stewart) is retiring. As a tribute of sorts, every agency's lieutenant is given the rank of "Bosley," which doesn't get confusing at all. So Elizabeth Banks' character in this film is called Bosley as she directs the activities of her Angels while also directing the actors playing them.