You must have never seen D&D players play Dungeon World. The game breaks under that scenario in my experience.
I think D&D 5e tries to be a lot of different things to appeal to a wide variety of people. Niche games like Dungeon World just don't appeal to everyone.
Well, the main people I've played DW with are people who still mostly play 3.5, some 5e, and obviously some Dungeon World (maybe some of them play other stuff too, but I'm pretty sure they're all like 95% D&D). Sure, DW requires a bit of a shift in mind set at times, and classic D&D players (especially of the 2e/3.x/5e ilk) often have to unlearn their assumptions that the rules actually describe how the game world works, or other similar misunderstandings. Still, the game is VERY robust, when I GMed it I just stuck hard to the agenda and techniques and the players didn't really have much choice, they kinda had to play DW as DW. I mean, if a player tried to tell me what move her character was making, I just said something like "tell me what that looks like" for example. Pretty soon you will find that, following the prescribed techniques, the game naturally takes on the proper character and structure. Obviously I can't speak to everyone else's experience, I'm sure there are players who are just not going to be able to make it work for them.
But my point is, I have actually never seen DW played by anyone who was NOT primarily a D&D player, and it works fine IME. Now, there are known GMs on these boards who APPEAR from what they say not be able to run DW in a way that many DW proponents feel is the intended manner, and seem to run it more like a D&D game. That would be a harder thing to fix, but its pretty clear they're not paying attention to what the game says to do, procedurally, or their understanding of those procedures is so different from the game designer's that they just cannot bridge the gap. Again though, my sister runs 99.9% 3.5e D&D and she's perfectly capable of running a pretty passable DW game!