Precisely. Just like it was for Hill, and Patterson, and Flores, and Zimm, and LaRoche, and Solis. All individual cases with no basis on which to suggest that there's any question about the overall strategy of handling the injury or even diagnosing it in the first place.
Paging, Dr. LostYudite. Paging, Dr. LostYudite.
Seriously, you can second-guess all you want if that's fun for you. But if this stuff was easy, you and I would be doing it.
Since I'm no expert in this area, I think it would be valid to compare the Nats "misdiagnosing" of injuries with other teams. I suspect the Nats are no different.