Huh? I didn't say "most singers." But, Taylor is not some special outlier and leader or groundbreaker because she made a political statement. Ariana Grande, Pink, Gaga, and Katy Perry were perfectly willing to be political in their twenties. Heck, Harry Styles endorsed an American political candidate and he's not even American. Kelsea Ballerini, Maren Morris, and Kacey Musgraves have made political statements as young country singers. And then there's the classic case of The Chicks, who sure stuck their necks out when they were younger. I think they're part of the reason that some are reluctant to do so.
Everyone is welcome to their opinions, but I definitely think that Taylor's decision to make political statements was based not only on her political beliefs, but also partly on calculating the response. I don't remember Taylor making an overtly political statement until a couple of years after Trump was elected. For quite some time, she avoided making political statements. I watched her documentary where they show her putting out that first political post on Twitter. She was regretting the fact that she had remained silent up until then and she herself wasn't happy that she had refrained from making political statements because she was afraid of the response. She had major discussions with her team about whether to make a political statement and her publicist was with her when she posted it. She seemed very nervous about it. Not everyone agreed with her decision (including her father), but one of the things I admire about Taylor is that she always seems to be the one making the major decisions and isn't someone's pawn or being controlled by other people.
I totally agree that she is a talented songwriter. I'm not suggesting that her success has nothing to do with her songwriting or that it is just because of her personality and marketing. I'm just saying that her success is not just because of her songwriting and singing.