I personally do not think Hurney is a bad GM at all, I just don't think he is all that great. I do think he has the capability of putting together a team that wins but I feel like he's really trying too hard to continually "build for the future through the draft."
Again, I don't think fans realize that every GM has to have that kind of mindset. The way the talent distribution is in the NFL, it is extremely hard to be able to field a team with excellent talent on both sides of the ball while actually being able to afford said talent. Premier players are so hard to find that anytime a team develops a good player they are often a free agent and command huge contracts on the open market, meaning they either have to tie a lot of money into that player or have someone in the pipeline ready to replace him. That's why the "building through the draft mantra" is so ingrained: free agency has made acquiring talent very difficult unless you are literally only a piece or two at the most from a Super Bowl. There are also no guarantees with those high-priced additions (see: Philadelphia, 2011.)