I don't really know what you're talking about. Mostly because I've never seen what you're talking about. BUT, I just recently watched Because I Said So, which had Mandy Moore in it, and I totally had a tiny crush on her after watching it.

So, no, it's not wrong to like something that has something to do with Mandy Moore. I liked her enough to get a crush on her for about 5 minutes. I'm not ashamed of it. It's totally cool.