I don't get it, and I'm pretty sure it's not a Boomer thing, because I didn't get any of the disco queens when I was in my 20s and listening to garage rock of the time.
To preface, good for her for being ridiculously successful. This is America, she seems to have worked hard, and work+success is the American dream.
Otherwise, I can honestly say that I've never once consciously listened to one of her songs, nor could I identify one if I heard it. I'm sure I've heard one in the background of something or other without knowing who the artist was. I guess she was just made Time's person of the year for being the most successful celebrity in the history of celebrities. Her fan base seems to border on the insane for all things Taylor Swift, and if I see one more headline about her and her new boyfriend, I'm going to scream. I get being a fan, but it's almost a religious zealot thing with these swifties.
Up until recently, she was apparently apolitical in her public persona, but is now getting into politics. I saw where she was going to be pitching for her fans to vote for Brandon, which they will if she tells them to. That kind of fame, with those kinds of fans, is a little dangerous. JMO.