Make up your mind? It sounds like you just agreed with the central thrust of the article -- Sony had a great design and junked it to have something "new".
I believe the author is delineating between "iterating" being small improvements to a relatively static product as opposed to "versioning" which are fairly significant changes between releases. Compare the 2008 MacBook Air 1 to the 2011 MacBook Air 4.
A letter (or two) followed by digits denoting the series iteration is Sony's standard naming convention. If you google "VAIO S360" or "VAIO Z12" you'll find exactly what you want. But, if you're not looking for your model year, you can google "VAIO S Series" or "VAIO Z Series" and get what you want.
I don't find it very hard, especially since the series names stay pretty consistent over a long time.
I also think they should break VAIO up into two brands, one for cheap computers and one for high-end ones. They could be like Toyota/Lexus.
But really, my main issue is that this article appears to be written by someone with an agenda and little actual knowledge. The laptop's name, for example is the Z14, not that long string which is the model number. Practically all laptops, even the Air, have those model numbers associated with the specific configuration. The box for my Air has it listed on the back, in fact.