The Walkout: Why was it limited to Raw?

So the big storyline being pushed by WWE right is that 55 Superstars walked out on Raw, and that they refuse to return to the show until Triple H steps down. Until then, they'll presumably only be appearing on Smackdown and at live events (where Triple H has agreed to stay away from). My question is, from a storyline standpoint, why is this protest limited to Raw?

It has been established that Triple H is the COO of WWE. He appears on both Raw and Smackdown, and makes judgments and decrees for both brands. He is not the General Manager of Raw. Further, the "chaos" that seemingly broke the camel's back occurred at Hell in a Cell, when the Miz and R-Truth attacked Air Boom backstage, and then stormed the final moments of the main event. That didn't even happen on Raw, so why protest that program specifically?

I do understand why they can't keep their Superstars off of both shows (how would they fill the time?) but from a storyline perspective, it doesn't quite make sense to me.