If you hate the Barbie movie, then you are the target audience, the theme just didn't reach you.
The Barbie movie, mainstream by internet trends, conveys a powerful message: one does not need to prove their struggle is greater than others in order to have a valid issue. It points that men (and women) are exposed to the idea that life can be shut into a two-way mindset: you're either with or against something, you cannot support one concept but experience a completely different one, you must choose one. Barbie slowly develops into the idea that it is okay to be wrong, but it takes a larger person to admit you are wrong/"the issue". It portrays that there are problems we face one-another with, and provides the solution to educate, prevent, and support victims of societal, social, and gender-related issues. Barbie embraces individuality while uniting women.
(Potential spoilers)
Barbie begins by showing a "perfect" world in which all barbies and kens live. Everyone works their assigned "job" that they enjoy completing, in spite of some being less eventful than others, such as beach ken. The main conflict is introduced when basic Barbie's (Margot Robbie) feet are no longer in the typical Barbie state, she walks like an ordinary human surrounded by Barbies with feet in the high-heel position. Barbie becomes nervous about her new state, and asks the other Barbies for compensation. Though supportive, they are intrigued by her new feet and she is sent to "weird barbie".
She visits Weird Barbie, a reject due to her odd appearance and flexibility, who suggests that she visits the "human world" to find herself/her owner. Beach Ken, trying to pursue Barbie romantically, joins her voyage to the human world.
(end of spoilers)
Barbie slowly introduces the idea of positive feminism, how men set unrealistic standards on each-other with the "Mojo-dojo-casa-house", it shows that you do not need to be macho or perfect at "manly-things", in order to be a "true man". The Kens are appreciated by Barbies when they are treated as dogs AND when they are developed into society, however, they ONLY feel appreciated when they are developed as respected members into society; the pleasure of patriarchy was only temporary. Of course, in order to be respected, they must agree to respect the Barbies.
The Barbies on the other hand, also set unrealistic standards for each-other, their struggles unspoken. This is what sent Barbie to the human world in the first place. By communicating their issues to each-other as well as the Kens, they were able to compromise. Any previous statements about the Kens can be applied to Barbie as well.
All while storytelling, Barbie carefully mixes in comedy, not to humor women's struggles, but to add a lighthearted mood.