Let me start by clarifying "drift". 'Drift' is the process by which a playgroup, consciously or unconsciously, moves away (drifts) from playing the game according to the rules as written (
RAW). Other terms used are
vanilla (RAW), the opposite of this may be many things,
pervy is one of them. House rules may fill gaps or override RAW - they would almost always be 'drift' as well (unless campaign-setting specific, possibly).
I'm not saying that drift is a good thing or a bad thing. I have, however, experienced much frustration with AD&D 2 and the standard rules. From what I gathered from other groups and our friend the internet, this was very very common. Many considered (parts of d&d to be 'bad design'). I'm also not interested in whether this is actually true or not. My question is:
Given your own experiences and general community feedback: are people 'drifting' as much in D&D4 as in earlier versions?
The questions of why/why not etc. I'll leave to other interested parties.
I think a non-subjective, non-community answer is possible, though it might require the marketing / customer service department of a certain RPG company. I'll change it to CW if common perception indicates it should be.
Note that I'm interested because I, as a customer, would be more interested in serious investigation of (purchasing) this game if less drift occurs: as a RPG enthusiast / theorist I also have my reasons.