The video likely worked due to nostalgia for the early days of TikTok (Musical.ly) and the creator's accurate and humorous impersonation of a popular figure from that era. The use of a recognizable cultural reference tapped into a shared memory for viewers.
Summary
The creator imitates the popular TikToker Baby Ariel from 2016, mimicking her mannerisms and facial expressions. The video is a comedic reenactment of a past internet trend.