Thre is no argument. There have been really successful console titles with plenty of depth. The real problem is pc gamers sometimes tend to have this holier than thou attitude towards console "peasants". This is of course, nothing more than absurd snobism. These people are just mad because the game didn't turn out to be a d2 clone with upgraded graphics, and are using this announcement to rationalize their unfunded assumptions, even though several of the explanations given to support some of the changes made a lot of sense, regardless if they took the best decisions or not.
Seriously did you even read the follow up.
It has nothing to do with a perception that PC gamers are better than console gamers
It has everything to do with an old guy in a suit with an MBA that looks at a graph that shows average number of consumers by age, and he notices that the 8-15 year old range is dramatically higher on consoles than it is on PC. HE then makes the decision that he wants to cater towards including that group to maximize profits.
This isn't an attack on you or any console gamers its just a fact that more 4th graders own a playstation than an Alienware computer.
I didn't take it as a personal attack at all. The point is, a lot of people seem to believe the "complexity" of Diablo (whatever that nonsense may be) was somehow "sacrificed" to cater to teenagers. Diablo was never a complex game, despite what many of these self appointed "hardcore experts" want to believe, yet they keep believing it was so they can stroke their interwebs ego by pretending they are somehow superior for finding number crunching and theorycrafting appealing.
To be honest, i find the "beta testing" argument more convincing, because the game in it's original release was in fact, a blatantly unfinished product. Not saying it has improved all that much, but at least the sentiment makes sense to a certain extent, as opposed to those self appointed ARPG experts claiming their soul was forever shattered because their made up complexity was forever taken away by evil corporate pigs. It gets even funnier when they talk about how complex and intrincate D2 was. It's like watching some snobby art critic trying to extrapolate some deep meaning off a contemporary art piece, when he's in fact just expressing his opinion.
In the end, these people are simply trying to rationalize the hate they developed as a product of D3 not being the upgraded D2 clone they expected it to be.