Absolutely BS, Wu is simply speculating on nothing. Apple would never delay the iMac because of a purported cannibalization with the MacPro. The MacPro does NOT relate to the same market as the iMac.
Well you're absolutely wrong. When I went from my dual G4 to an intel mac Pro, I very heavily thought about the imac. Why? Because I'm dealing with mostly DV and P2 video. Because I wanted 2 monitors. I already had one flat screen LCD. And since LCDs were a grand or more at the time, buying the less expensive iMac would give me a screen to boot. What it didn't have was the expandability. But what I'm doing would work just fine on fw800 drives.
But in the end, I thought it would look less professional with the iMac, and I didn't want to risk the need for expandability. So I bought the low end MacPro. 2 years later, I still haven't installed a Kona3 or MXO2 or anything. But I do use an internal SATA raid. I could've lived with fw800 drives however.
So it was a tough choice. And I assume some go the other way. Especially if they're not doing high end editing or working with clients.