One thing that may deform statistics is the interpretation of feminism.
Personally i prefer equality and I recognize that the majority of people mean equality when talking about feminism.
In almost all ideological groups theres a section of extremist that listen to the same name. Extremist often yell the loudest and say stupid, hatefull memeable stuff. The post of extremist make ripe content for opposers of the general movement to show how stupid/bad an entire group is.
You can be an otherwise very rational person if the only example of feminism you know is jk rowling then it influenced the decision.
On why its different between generation. In general i observe gen-x and boomers care alot about official definition and proper terminology which leads to narrower thinking but also less Confusion on how to perceive in unity.
Millenials and gen z tend to play More creative with language which can allow much more nuanced communication and fresh perspectives but causes different word meanings within different social groups. Misunderstanding outside of it.