Nothing said in that interview was a lie... but Apple execs also weren't totally transparent. It's very true that the 2013 design wouldn't have worked with a single, high power GPU. That part is true. But the part they left out is the design also didn't work well with two mid-upper end GPUs either. It never really worked well for the 7870s they used. And there wasn't much on the market it worked well with either. They made the same assumptions they made when they switched to Intel, that GPUs would get more and more efficient with AMD each year, and that the GPUs would grow into the design. Intel was able to deliver on that promise in 2006, AMD couldn't over the last four years.