Thomas Shey
Legend
Misaligned PbtA games have already been mentioned.
Yeah, I responded to a poster (Loverdrive I think) earlier on that; I just wanted to make it clear I wasn't personally qualified to say if it was true or to what degree.
Same is true for FitD games. People don't necessarily understand why the original games work well for that they do. They may misunderstand the underlying principles, design choices made, game mechanics, and how those things contribute to the overall whole. Misunderstanding Moves in PbtA is a particularly egregious issue. They don't necessarily understand how some changes made to the game can have other knock on effects to the game's feel. So for every good non-AW PbtA game out there (e.g., Stonetop, Masks, Thirsty Sword Lesbians, etc.) there are nine half-baked ones. So Sturgeon's Law and all that.
I do think that an increased trend of some contemporaneous games (obviously not all: e.g., OSR, D&D, etc.) has been the authors sometimes saying "please play this game rules as written first before making changes all willy nilly." It's an appeal to understand the game on its own terms. Some people make changes to a game, say that the game played horribly, but when you find out what they changed, it's pretty clear why they had a horrible time. (Those aforementioned knock on effects caused by changes to the game.)
Yeah, while I have a tendency to occasionally put my oar into a game system rules-wise before playing it, I try to see if I understand the purpose of a rule before doing so, and tend to limit it to individual rules liable to go over badly with my group in a rules set I otherwise think will go well, and try to avoid doing it with rules that seem heavily load-bearing.