That was a very disappointing loss. No doubt. The majority of the blame is given to Sam Darnold for this loss and it is very hard to argue he was not the main culprit. But there were other culprits involved. KOC, the offensive line, the receivers, and the kicker (I do not agree with this one but whatevs).
Some argue that it is OK because nobody predicted this season out of the Vikings anyway. I do not totally agree with this because once they proved they were really good, the expectations changed. It was more than reasonable to expect a competitive performance.