The problem with your argument is that not one single example from the article being linked to in the OP would qualify for your definition of "subtractive design". Whether you're talking about Portal, Ico, or the iPod, none of them subtracted elements without adding anything new to the equation.
Disagree. Ico removed stages, and left only the castle, without adding anything else into the mix. Portal removed the weapons for the characters, and most of the furniture, without adding a replacement. Apple subtracted the floppy disk, without adding nothing for it.
Yes, maybe they added *other* things, but not as replacements of what they removed. While 3e did not remove the "thief skills", just streamlined them, and the non-weapon proficiencies, into the skill system under a single umbrella. That's Consistency, as per the definition I provided, and not Subtraction.
Repeating myself: Thac0 becoming Base Attack is streamlining, and a Consistent Rule, but not Subtraction design. Eliminating the need to roll to attack, and making damage the only random roll, would be Subtraction Design.
In the same sense, removing one single chair from your barrock style hall becouse it has a broken leg does not make your house minimalist.