I disagree.
D&D does support both playstyles. If you're like me and have never experienced the 15MWD in person, it's because you play a certain way. And the game itself does not penalize you for doing so.
If you're part of a group that DOES routinely have the 15MWD, it's usually because the DM is running his game in such a way that the playstyle is rewarded. And as long as HE'S OK with it, there is no inherent in-game penalty for that syle of play either.
D&D does support both playstyles. If you're like me and have never experienced the 15MWD in person, it's because you play a certain way. And the game itself does not penalize you for doing so.
If you're part of a group that DOES routinely have the 15MWD, it's usually because the DM is running his game in such a way that the playstyle is rewarded. And as long as HE'S OK with it, there is no inherent in-game penalty for that syle of play either.