Well yeah, but I also don't think it's really necessary for her to. It's cool when skaters are versatile and show off lots of different styles, of course, but ultimately you're just as likely to get criticized for struggling to portray something outside your wheelhouse as you are applauded for taking a risk. And the Britney Spears program was a risk.
I'm not saying Britney Spears wasn't a risk, I'm saying that it was less of a risk for her than picking, I don't know, Rachmaninoff. The point is that while she's excellent with the music that fits with her style of 'happy skating', Hallelujah isn't really 'happy skating' music. The OP was critising that, and while I don't really agree with their wording I am with them on the topic. Yes, Hallelujah can be interpreted as joyous religious enlightenment, but for that you can't have the lyrics. As TallyT said, a cold and a broken Hallelujah is not the signal for a big smile. She should've gone with the instrumental version if she wanted to use Hallelujah, and to be honest I think she would've been better off with other music. There are literally thousands of songs she could've used to display her style, her Celine Dion SP was beloved by everyone.