It is a rebuttal to anybody who uses unknowable atrrition data to support their point. That's been my criticism this entire time.
For all the shit Blizzard gets for not listening to its fans the ultimate irony is that this shift in business model is representative of the way most people play WoW these days. We can argue endlessly about whether this is the best thing for it longterm but it's unquestionable why it happened.