The video likely performed well due to its visually satisfying ASMR-like preparation of popular Starbucks drinks, appealing to a broad audience interested in coffee and "aesthetic" content.
Summary
The video shows the preparation of two Starbucks cold brew drinks: Vanilla sweet cream cold brew and Salted caramel cream cold brew. Ice is added to both cups, followed by the cold brew coffee, and then the respective cream toppings are poured in, creating a visually appealing layered effect.
Starbucks: (a) it ACTS - the cups are used to prepare and serve drinks, visible branding on the cups. Removing it would change what happens in the video.