What dramatic purpose might there be to having 8 short scenes in the last act?

To create a sense of urgency and suspense: The play's action can build quickly and culminate in a climactic moment.

To increase the tension and stakes: Each scene can bring new challenges and obstacles for the characters, raising the stakes and building tension towards the resolution of the conflict.

To allow for multiple plotlines or character arcs to be resolved: By having multiple short scenes, the playwright can weave together different storylines, allowing for a satisfying conclusion to each one.

To provide a sense of closure or catharsis: The short scenes can each provide a moment of reflection or resolution, leading to a cathartic experience for the audience.