Eh. She also professes her love for Brand New. Not metal stalwarts. No matter who she said she liked, people are going to do exactly what you're doing and say she's pretending.
As for it being reflected in the music, do you year my Prince fanboyism in my music? Does that mean I don't love Prince?
I don't mean to limit it to metal bands. She seems to try too hard at professing her love for anything that isn't top 40, which would be cute/clever if it stuck to tweeting, or liner notes in an album, or something like that..but to drop it in interviews, tweeting, etc., it grows old. I'm not saying she's pretending, as I said, great if she likes them. But, to push the issue so much makes it seem not so genuine. Like she's reiterating it over and over to try and convince herself and others of how br00tal she is.
No, but I also didn't know you love Prince because you don't post about it in 1/10 tweets, rant about him in interviews, etc.
Again, not saying she's pretending, just that she seems to be doing it intentionally and for street cred. I'd say the same thing about any other pop singer, Taylor included. If she went on and on about how much she loves particular country singers, I'd say, "Cool, we get the picture. Move on."