Grönsíir said:
Can you tell me of another educational route that examines a range of topics through an ideological lens?
I think the problem is that you don't know what gender studies actually is. Even assuming feminism is an ideology, It's not just sociology through a feminist lens. The idea of gender and what it is can be quite difficult to answer and it changes all the time, despite being a central tenet in most cultures. It warrants its own area of study the same way you would study warfare or material culture or speech separately from history or sociology.