sure, fans can look ahead, and it's not going to (I think.....) jinx the season.
But, my issue/disclaimer is that each game is a unique entity because of the match-ups involved.
The fans that get me are the ones who go "we beat Nebraska, so we should beat Northwestern" and so forth. the thing is - the match-ups against Nebraska are different than the match-ups against Northwestern. each team has its own unique strengths and weaknesses. if the Gophers beat Team A, that does not improve their odds of beating Team B. Team B may be a more difficult match-up.
and on Bowling Green - the fact that the Gophers lost to an inferior team is a concern. If it happened once, it can happen again. Hopefully, the team does not lose focus that badly for any remaining opponents, but I think it is a mistake to dismiss BG as a fluke. "those who do not recall the past are doomed to repeat it..."