It absolutely does assume that. There is an implicit assumption in their argument that women are doing something they don’t want to due to “oppression”.

The percent of women being married is irrelevant. Women can be oppressed even if they are not married due to societal expectations. If a single woman is expected not to pursue education and simply become a housewife, then it’s irrelevant whether she is married or not. She is oppressed. However, that is literally a contradiction because STEM education shows high representation of women in Iran.

Honestly there are a lot of people here asserting what they think are facts who don’t have the slightest idea how the world works outside their own city, let alone country. I would encourage some critical thinking when it comes to stuff like this.