Earlier quoted context omitted.
Looking at her singles page on wikipedia (suspect source, but i don't know of a better one), looks like she's had 11 singles hit number 1 on billboard 100, and most of them are later songs. She's had many more in the top 10. I think your theses here is a bit suspect. https://en.wikipedia.org/wiki/Taylor_Swift_singles_discograp...
My point is that the OP named someone that wrote or co-wrote nearly every song she’s recorded undermining there entire argument.
"We Are Never Ever Getting Back Together" (2012): Taylor Swift, Max Martin, Shellback
"Shake It Off" (2014): Taylor Swift, Max Martin, Shellback
"Blank Space" (2014): Taylor Swift, Max Martin, Shellback
"Bad Blood" (featuring Kendrick Lamar) (2015): Taylor Swift, Kendrick Lamar, Max Martin, Shellback
"Look What You Made Me Do" (2017): Taylor Swift, Jack Antonoff, Richard Fairbrass, Fred Fairbrass, Rob Manzoli
"Cardigan" (2020): Taylor Swift, Aaron Dessner
"Willow" (2020): Taylor Swift, Aaron Dessner
"All Too Well (10 Minute Version) (Taylor's Version)" (2021): Taylor Swift, Liz Rose
"Anti-Hero" (2022): Taylor Swift, Jack Antonoff
"Cruel Summer" (2023): Taylor Swift, Jack Antonoff, St. Vincent
"Is It Over Now? (Taylor's Version)" (2023): Taylor Swift, Jack Antonoff
"Fortnight" (featuring Post Malone) (2024): Taylor Swift, Post Malone, Jack Antonoff