Question about tzitzit from a Gentile

First off, I apologize if this is a question you learn in first grade of Hebrew school. I am not a Jew and thus never had any education about jewish stuff besides things I read on my own. I am currently reading the book Biblical Literacy by Rabbi Joseph Telushkin. In the section explaining tzitzit, he says nowadays when women go out and about in the world (as opposed to being homebound in the past), the rationale for wearing tzitzit would be as binding for women as it is for men (aka to remind them to observe the mitzvot). From what I understand, Rabbi Telushkin is a legitimate, Orthodox rabbi, not someone who has controversial minority opinions. If so, why don’t more Orthodox women who work wear tzitzit?