I think you didn't understand the op post, he clearly mention that high end gear is purchased using currency you can get directly from blizzard, in retail at least.
The same don't happen in classic because firstly if you purchase gold you are infringing Toss and are prone to be ban or be held accountable and second you can't get anything end game related for merely gold, (oh but they can purchase runs, mount, BoE, X, Y, bla bla blah, yes but it doesn't even matter is not like it's impossible to achieve anyways by just playing).
You should try to read instead of being rude, it only invalidate your point.
- - - Updated - - -
In fact you can, the token thing sells even if nobody ever purchase it, they only use the data of purchases with money vs the gold as a way to evaluate the market price, but even if nobody buys your token you still get paid, and if no token is available you still are able to get with gold, thus Blizzard is actually making gold out of thin air to sell you using a clever mechanic.
Also nothing can assure you that Blizzard don't manipulate the gold inflation price on it to stimulate sales of the tokens.