It’s amazing how many people are putting how much effort into reading a lot in a fairly simple movie. The only “deeper meaning” in how Immortan Joe treats his women is that it’s a quick way to show he’s a real sleaze because we want to get that over with and move on to some car crashes already. It’s an action movie, and it follow late Mad Max co-writer’s maxim “when people are talking nothing is happening, and we’re making an action movie”, so it deliberately avoid wasting dialog establishing the bad guy is bad.
E X A C T L Y!
I cannot say one way or the other because I still haven’t seen the movie. I saw the first two way back when, and I thought that they were more than “action” movies, IMHO. The director called in Leftie/Feminist Eve Ensler (all-things vagina expert) to consult on the movie. (btw, I thought ‘For Whom the Bell Tolls’ was just a war story)