From what I have read, the shit starts when it is said that if this/that happened in a game, the preseason and in season injuries that occur, which every team deals with, and the infamous 'true win', that pisses many off.
Despite a more difficult 2018 schedule, there is better depth at many positions than previous years. So the 10 wins is possible. But if they finish at 8 -8, or a game or more under, some posters will pound that the draft of mostly offense and not D-line.
With lack of players who could start on many teams, lack of depth behind them,
and coming into a third year of Quinn 'fixing the Lions', did anyone really think decades of a mess could be fixed in this short a time?