If you really read the article with an open mind, it's quite believable. Evidence to support this:
1 - Their description of the SouthBridge chip is dead on. (802.11, FireWire 800, USB 2.0, Bluetooth) The PowerMac G5 has it all.
2 - That article was posted 3 months before MacWorld of 2002, and claimed Moto would be shipping in January. Remember, THAT was the MacWorld with Apple web site saying ... "Beyond the rumor sites...way beyond..." A published story from that time (a rumor site story, however) indicated that Apple was readying the release of the PowerMac G5 using Motos chip for that MacWorld, and Moto found design flaws that caused them to need to halt things for no less than 3 months. It's my feeling THAT is why the "beyond the rumor sites" message ended up seeming overkill. It's because Apple had to NOT announce something they had planned, which led to Steve screaming at Moto and led them further into getting things moving with IBM.
3 - At that time, over a year ago, the next chip Moto was working on WOULD have been "the G5" as far as we were concerned. The real name was the Motorola 7500, just like IBM's real name is the PPC 970. The "G5" name comes from Apple, not Motorola nor IBM...and if the 7500 had been in a new machine at that MacWorld, it would have been called the G5. And we all agree that the PowerMac line has been in trouble for well over 2 years. A year ago is exactly when Apple would have needed a redesign. One more hint that they had to back out of plans due to Motorola.
4 - Rumors at that time indicated that beta testers had machines in welded shut enclosures they were testing from Apple that were significantly faster than G4 machines. What they were testing was most likely this Motorola chip.
5 - THe comment about Jaguar being 64-bit also makes sense at the time. The story is 100% accurate based on when it was written...10.2 WOULD have had to be 64-bit aware, just like Panther will be 64-bit aware, because that G5 would have been out before Jaguar shipped. So the article is not wrong, or mistaken, or full of lies. It is simply outdated due to Motorola being unable to deliver what they had promised to Apple.