Well, if you're an enthusiastic computer hobbyist and don't want to get involved in the TRS-80, CoCo, or even C64 communities, I suppose this is a way to go. :-D
Seriously, though, even the dude what wrote the piece acknowledged the price/performance difference between x86 and PPC boxes, and the A1, unless some honest-to-Jehovah miracle occurs, isn't gonna change that. Not being a part of AInc, I can't say for sure that the A1 is intended as a stop-gap measure and has the intended product lifespan of a hyperactive mayfly, but what else could happen?
Methinks the AInc investors aren't looking for the kind of profits that you get from running a boutique computer corporation, and even though AInc is neither making nor selling the hardware, their next major OS won't run on anything else, so the effect is much the same as if they were Apple. Sad thing is, they ain't Apple! Apple can at least count its userbase in the millions, so having its OS go hand-in-glove with its own computer hardware remains a viable (read: profitable) course. AInc won't even get what profits do come from A1 sales! Okay, maybe some buck from licensing, but that'll be even less than the meager returns Eyetech will see.
So, hey, if you have the means and it scratches your particular itch, more power to you! Just don't delude yourself into thinking that the A1/OS 4 combo will be the driving force of the renaissance of the Amiga.