Yeah, he only posted the best record the Bills have had since 2004. For a team that has only had two years over 500 since 2000 (one being this season), you Bills fans have irrationally high expectations and want those lofty expectations to be met very quickly.
Yes, the Bills, like 9 other AFC teams, had a winning record this year. The Bills' record against those 9 teams was 1-5, with the only win coming in the regular season finale, in a game that was meaningless for both teams.
Maybe the Bills can re-hire Mularkey, their last "winning" coach?