Not everything has to be black and white. Voicing very valid concerns about the offense doesn't mean people are trolls or bandwagon fans.
The problem is, if the Bills were to go out and lose to Washington a lot of the people seeing only sunshine in this win will suddenly be calling for the coach's head. A lot of people operate on a win = insanely optimistic, lose = clinically depressed basis.
There were great things about the win and I never get tired of looking at that score, but there are legitimate worries and concerns there as well. McD pretty much said the same thing in his PC