Exactly. Personally, I feel like they could've had Oshawott evolve into Dewott only if nothing else and have him be a beast in battle but a total cutie otherwise. I mean, c'mon, don't tell me that pouty face isn't adorable.
I guess it was somehow more productive to them to just have both lines being very recurrent.
I swear, Dewott showed a lot during Unova.