Stopped the process at "launch day" and STILL weren't committed to a specific chip?
I smell BS coming from Atari in this interview. No major project that is real and being responsibly managed gets THAT close to its release date and then decides, "Well, maybe we'll just change the fundamental CPU architecture." By the time you're carrying engineering prototypes to trade shows to show them off, you damn' well better have settled on a chip architecture. Once settled, you only change that under dire circumstances. Even if the replacement is essentially identical, you don't delay the project for things that "would be nice." Delays to an almost-ready project cost a LOT of money.
The Atari bloke's statements make it clear that the project is nowhere near the state of readiness they would like us to think it is in.
Having listened to the rest of the excerpts, it's even a bit worse than that. They went all the way to a "product launch" when they knew they didn't have working *engineering prototype* hardware (else they'd have been willing to show at least a don't-touch-this static display of an operating prototype.