He never was that good.  He wasn't good at all in preseason, and he "won" the job by being adequate.  Remember that in the first San Diego game Trevor threw a would be pick 6 but the guy just dropped it when it was right in his hands.  Had he made that catch we might be 2-4 or worse right now.  The folks in the media are mostly to blame and a lot of them are changing their stories today.  Schlereth was the biggest Trevor Siemian butt kissers in the pre-season but his reputation as an analyst is at stake and even he now admits that Trevor is the problem.  The other guy that's terrible is Brandon Stokely who blamed the Giants loss solely on the defense.  He is living in a fantasy world where Trevor Siemian is a great Quarterback, so it's no shock to me that so many fans have thought that as well.  The fact is that Trevor Siemian is another Kyle Orton or Bryan Griese who'se career will be over within the next 2-3 years.