It really isn't. Jumping into using a huge performance sink like ember to add a little interactivity to a content page is a horrible decision to start with. This just seems to drag the poor performance back to kill your server
That's a straw man though. Sure, adding Ember for a "little interactivity" is kind of stupid. But if you want to add a lot of interactivity? Is a load of "$.click" function soup better?