Yes, I understand the opposite stance: All the rumors and supposed "leaks" generate more buzz and excitement for E3.
And for a long while, I agreed with that assessment. After all, rumors can be lots of fun; they promote discussion and get gamers more enthusiastic about the industry in general. However, I think we've reached the point where we're discovering big announcements and surprises, which completely spoils some of the mystery of the show. Basically, all we're doing these days is waiting to see which of the hundreds of rumors prove true and as a result, we're not easily shocked.
The good news is that Sony, Microsoft and Nintendo still manage to conceal a few headline-grabbing secrets, which keeps any flagging excitement alive. But how much longer before the all-powerful Internet knows every tiny detail before any of the press conferences begin? Then what? People ask if E3 is still relevant these days; I say the only reason it isn't is because we're systematically killing off the buzz that has historically surrounded the event. SCEA president Jack Tretton has made cracks on stage before about how they just can't keep anything secret anymore.
I'm all for getting people talking, and I'm all for anything that promotes attention and popularity in video games. But there's a limit. Personally, I don't really want to know absolutely everything beforehand; I don't even want a whiff of something big. Maybe I'm the only one but that's how I see it. I love the crowd-pleasing bombs from the stage!