"She knew that she wanted to write her own songs, and she knew that she wanted to write those songs for an audience of her peers. And that sounds really simple, but the consensus in country music was that was not the right decision. Because other teen artists had not really broken through in country music the way that Taylor wanted to...Around 2006, 80% of the hits in country music were performed by men, and men were played 4-5x times more on country music radio...It was really hard, if you were a woman, to break through that dynamic."
These are quotes that Kevin Evers, who is an editor at the Harvard Business Review, gave in a documentary talking about Taylor's early career. No, she didn't literally invent being a teen girl in country music, but she was absolutely a trailblazer when it came to doing it successfully.
So pretending like her success was manufactured or "market research driven" like the original quote that started this was saying, is far more of a bad take than anyone who said that she was a trailblazer in her field.
Taylor Swift fans have a lot of bad takes about music but it's important to remember that they know so little about the subject that they genuinely believe that Taylor Swift invented being a teen girl in country music.