Buffalo’s recent offensive frustrations lack perspective, but Dorsey’s role is becoming increasingly important for the stretch run Buffalo Bills offensive coordinator Ken Dorsey is a first-time play caller this season. During the team’s 8-3 start to the season, the Bills are averaging 415.9 yards of offense per game (second in the NFL) and scoring 28.1 points per game (also second). Following a red-hot start to the season, which saw the Bills win six of their first seven games and look like the best team in the NFL, criticism of Dorsey’s offense was muted. Quarterback Josh Allen was a MVP candidate.…