I think that's a perfectly reasonable take, and I think I mostly agree with it. But I'm seeing a lot of "Kamara is on the decline" type posts, which is where I take issue. He was very obviously hurt this season, and not the same player. IMHO he should have either been shut down for the season or from weeks 6 through 16.
It's not intellectually honest to hold him to the 2nd half of this season as who he is as a player - that's not him. You could potentially make the "injury prone" case and that's a whole different conversation. But he's a great running back, when healthy.