The most likely reason the author decided to organize the paragraph in that way is:
To show the eagerness of other Asian Americans to connect with an Asian American role model.
The author recounts their experience of being cast in a show and the subsequent positive reactions from young Asian American writers, actors, and performers. This highlights the impact of representation and the meaningful connections that can arise from seeing someone with a similar background in a visible role, despite the author's own surprise at the significance of their brief appearance.