The article is a load of bunk.
First off the author is mistaken about the name of the new iMac. It is not an "iMac G5". Secondly there is nothing in the article that is new. Everyone already knows that using Rosetta is going to cause a performance hit until native applications come out.
I remember the negative press when Apple switched to OS X. That was perhaps a far more challenging transition than the one faced by Apple's switch to Intel. Given Rosetta and Apple's developer tools, the transition to Intel should be quicker.
People who buy an Intel iMac and expect PowerPC applications to run twice as fast are probably the same people who vote Democrat and expect tax cuts.
Hell, even my Asteroids is running fine in emulation mode.
Quit bitching!