Some of the reasons why "Swish Swish" is considered a bad song include:
* Repetitive lyrics: The song's lyrics are repetitive and lack depth, with the phrase "Swish swish, bish" being repeated throughout.
* Lack of originality: The song's sound and production were seen as unoriginal and lacking in creativity, with some critics comparing it to Taylor Swift's "Bad Blood."
* Negative reception: The song received mixed reviews from critics, with many criticizing its lyrics and overall quality. It also failed to connect with audiences, with many finding the song forgettable and lacking in impact.
Overall, "Swish Swish" is considered one of Katy Perry's worst songs due to its repetitive lyrics, lack of originality, negative reception, and commercial underperformance.