1. How is this a disservice to the legacy of the band if he's bringing that legacy to fans who want to continue sharing it amongst themselves. Calling it "Jason Bonham's Led Zeppelin Experience" is perfectly fine. After all, he is Bonzo Jr. and, by nearly all accounts, the rightful heir to the percussion throne for the group.
2. Who gives a flying fuck what Ross or anyone thinks for that matter. If he has the blessing of the boys, which I'm sure he does, than that's all that matters. Bonzo would want Jason to do what makes him happy, and I'll bet if Bonzo were still alive, he'd play alongside his son...and sock Ross in the face for saying such nonsense.