What I meant was that most of those beta those dungeons were plainly unfair, and the difficulty was a lot higher. But the resident powergamers seemed to take that at face value, like, that was supposed to be it. That changed drastically by the end of the beta (because it was like that as far as I know just to catch runaway degenerate strats), but the wiki was mostly written (and sorta skewed towards) that kind of meta. The whole "recommended" class thing, and "optimal" ways to play and all sorts of stuff is a relic from that age, etc.
It wasn't a shift in design, it was a shift in... well, when it was done it wasn't a game for a select few lunatic powergamers but quite approachable to the general public (well, a lot more than it was). It was a huge change. The way the wiki is layed out and a lot about it simply isn't right for the game that DD is right now (and wasn't for quite a while, except things kept changing towards the end of the beta so we kept putting off reworking it untill we never actually did it and it was sorta abandoned even by Darvin XD)