No, not really. I noticed the same thing about the song before I even read anyone else's comments, and was like okay, cool, I'm not the only one who thought that "na-a-a-aow" sounded a bit cheesy haha. I love Paramore and am stoked for this album, I'm not purposely trying to find flaws in it
And there be my concern as well.
I already don't find Hayley to be an especially good writer, and that little bit lends a tiny morsel of credence to that notion.
It was just super cheesy.