My biggest issue with it was honestly the ending. They make it clear that Barbie world is just reversed where the men are treated poorly by the women. Which is fine. The analogy makes as much sense as it needs to for the point it makes.
But at the end they have the change to use that point to illustrate where they would like to see the world go. They could have said “wow we were assholes and our poor treatment of men encouraged this entire shit show. We’re going to treat men as equals now” but instead they simply gave them slightly better benefits than they had before and still expected to be able to treat them like crap. It would’ve been nicer to see them illustrate more equality between the genders and the results it had on the regular world.
I can see the joke, but that wasn’t the timing for it. This was a statement movie through and through, and while it does paint what has been done in the past to women this happened at the end of the film. For a statement film then end is a call to action, not a silly one liner. That joke was better reserved to happen closer to the middle or beginning. The ending should be reserved for an analogy for how things should be.