Eh, it sounds to me like they're saying "we tried to imitate D2 exactly, but people don't want it anymore." That's just flat out a lie though, because they didn't imitate D2 at all. In the article, the mention that a player could conceivably take years to drop specific "uber uniques." While true that it would take a lot of time to drop it naturally, D2 had a pretty robust trading economy in it's later years. Unless you were specifically going solo, you had the option to save up. It took time, but it was a goal that was accomplishable on ladder.

Unless they changed it when I wasn't looking, uber uniques are not tradable in D4 at all. I'm not necessarily going to argue for or against that, it's a game design choice, but it's specifically not the choice made by D2. Obviously players aren't going to want to grind for years for a specific item, but they never had to in the past.