I thought so too, at first, but now I'm really down on it. Ecto Changesets work fine for flat data, but when you have to deal with nested data, it becomes a nightmare, because you have to use these special functions to read and update the data. Doing that in a nested context just gets really clunky, especially coming from Clojure, where I would just do something trivial, like
(assoc-in changeset [:children 1 :title] "New title")
That is indeed a bit of a pain point. From what I understand, it's a bit intentional and the library authors want you to prefer flatter data structures. Now of course not all structures CAN be flat so you can hit a bit of an impedance mismatch. However, I think Ecto is amazing for more common (for me at least) cases.
