The thing is, if you think of "What a dungeon" is - in the past zeldas, esp the 3d ones - and then "what we feel" the "dungeons" are in BOTW - sometimes it is a matter of perspective.
Take death mountain in other games, the dungeon was in the mountain you wondered around, got shit- fought a boss. So "Death Mountain" vs the lizard divine beast - yeah sucked, was small etc.
If you consider the entire chain of quests/events from start with the cannons and getting morphine for the old rock chief all the way to the end of the divine beast as "the dungeon" then its fairly equivalent.
The path to, in and the time inside the yiga base to the boss as "a dungeon" again- not bad.
So "elements of the dungeons" are spread out and part of the overall world. However still with that, I feel they could do more and do better and keep them kind of more unique and contained while still keeping all the stuff they did awesome in botw