No, you're not. If you were actually curious, you would have bothered to at least skim the article, which spends quite a bit of space talking about the binary vs. decimal definitions of GB.
Author never mentions that treating gigabyte as being equal to 10^9 bytes is actually endorsed by standards organizations such as NIST and IEEE and overall is a better practice. By failing to mention that fact the author implies that Apple is trying to fool us by inflating the reported disk sizes of it's products.
+1. That grated on me a bit, too. While the author does treat the topic extensively, it felt slanted. There's no grand conspiracy: storage manufacturers have traditionally reported capacity in base 10 GB, software in base 2 GiB. So long as the article is internally consistent, so as to compare like units, what does it matter?
He does a lot of things like this. Look at the "main" picture, the graph of storage breakdown. Instead of aligning the sections, he makes it intentionally misleading with that orange block on the right.
I'm not sure why he's being so misleading here, since he would have had a point anyhow.
The guy isn't ranting. The article is matter-of-fact in tone. The mebi-/gibi-/...-byte (metric) definition was standardized rather late (late 90's). By that time the general public was already accustomed to the (now wrong) binary interpretation of a MB or GB.
Also of note: The GB was actually once defined by the IEEE as 1024^3 bytes.
For better or worse, disk manufacturers have been using base 10 megabytes and gigabytes for a couple of decades now. Sure, that switch was marketing driven, but criticizing Apple for eventually switching to the same nomenclature universally used by the storage industry qualifies as a "rant" in my book.
If Apple started doing that for RAM, which is still universally quantified using base 2 gigabytes, now that would be rant-worthy.
With "general public" you mean "computer savvy people who know about number bases and binary in particular" while the "general public" gets on with 1000 GiB = 1 TiB.
