The majority seems to agree that there is too much D&D in Dungeon World. For example, having attributes like Strength between 3 and 18 mostly adds complexity but little benefit. So everybody likes to hack Dungeon World: Chasing Adventure, Stonetop, World of Dungeons, Fellowship 2e, Homebrew World, …
Is any of those getting popular so we could have a modern „default Fantasy PbtA“?
My preferred PbtA for games featuring fantasy adventuring is Ironsworn. Don’t think it can be considered a DW hack as it doesn’t even have playbooks. And by default it it far from heroic fantasy. But there are heroic fantasy out there for Ironsworn to scratch that itch.