People aren't necessarily buying the MacBook Air because of the hardware or the price. At the end of the day, you want a stable platform that takes away the micromanagement and lets you get to your work.
I haven't heard of any stability or reliability issues regarding Apple's choice of storage in Air's, MacBook Pro's (w/ SSD), iPads, iPhones or any Flash-storage based product. A single blog post with it's extremely limited scoped is a weak reason to write off an entire group of storage tech.
There's probably some truth to SSDs dying off horribly, but like anything else, the tech will evolve and then you replace your SSD with a new SSD at some point. Wouldn't hurt to use Time Machine as well.