He's right though - the genre stagnated with Diablo 2.

What are you talking about? What is the interviewer talking about? Diablo II was released nine (9) frigging years ago, and it's yet to have a sequel or heir, official or otherwise. How could it possibly be responsible for any current stagnation of RPGs?

Also, and here I'm not disputing it but just for my curiosity, which several Diablo clones have been released lately? I know one is Sacred 2…