Some people are fans of the San Francisco 49ers. But many, many more people are NOT fans of the San Francisco 49ers. This 2018 Deadspin NFL team preview is for those in the latter group. Read all the previews so far here. Your team: San Francisco 49ers. Your 2017 record: 6-10, but oh my God you never heard people hype up a 6-10 record more than these fans. Those first nine straight losses still count, you assholes. You don’t get to burn those off the ledger just because you traded for Italian Clark Kent. Half the Niners’ wins last season came against the Giants, Bears, and Texans. But because San Francisco closed out the season winning six of seven with a new quarterback, people acted like this team deserved a wild card bid. Well, excuse me if I think your joyful optimism is obsce…