To understand why this scene works, you first have to understand the studio behind it. carved out a specific lane in the industry by rejecting the glossy, over-lit, "set-like" feel of major studio productions. Instead, TeenFidelity built its reputation on a "bedroom authenticity."
Without relying on explicit detail (suitable for an informative article), the scene follows a three-act structure rarely seen in shorts: TeenFidelity - Lena Anderson - Book Worm