This sounds like something that was made up post-hoc because it sounds good. I have yet to run into a zombie story where they talk about how great traditional gender roles are, or a vampire story where they talk about taking control of the means of production. They are just stories. There is no reason that they need to be inherently political - much less to run along the particular political lines we have in society today.
We could even make the case that the opposite is true - the most common trope I know of in vampire stories is feeling sympathy for the vampire when they have their monologue about how hard vampiring is. And the most common trope in Zombie movies is that the people need to work together, be honest, and sacrifice for each other in order to overcome the hoard.