I think people are being overly critical. Yes it was disappointing to drop off so dramatically at the end, but there are a lot more positives than negatives to take.
I think lack of match fitness probably played a part. Yes Cas aren't going to be 100% either but at this time of year in particular every team is at a slightly different level of fitness.
I think complacency played a part, both from the players and maybe a little bit from Smith himself with some of his substitutes. Perhaps thinking he was safe to rest some of his big guns knowing it's a short turnaround to Leeds.
I think there is also still a bit of metal fragility there that won't go away overnight. We did dig deep in the last 10 minutes though so it wasn't a disaster on that front. I think Hull teams of the past would have maybe lost that game at the death in that situation.
You've also just got to give some credit to Cas. When a team has nothing to lose and just throws caution to the wind it's hard to stop when everything they do sticks.
Learn from our mistakes, but we should also focus on the good things and go to Leeds with confidence. Especially with Savelio and Sao to bolster the pack. There's lots to be optimistic about.