This drives me crazy. You're a writer. You've chosen to write about sports, a subject that brings out the passion in it's fans. The same passion that probably set you on your career path. Your blog (or articles etc.) all gain their relevance from the passion of the readers who seek out information that fuels their passion. Then, when that passion turns critical, you deride it and chide those who are passionate about their sport and team, for not having placed this in proper perspective. What unmitigated gall.
Ease up on telling fans not to be passionate. Without the fans' passions, your writing wouldn't be a career, it would be a hobby. You probably bought your sideswiped car with money made from the passion of sports fans, so please spare us the condescension. As the old saying goes: if you can't stand the heat...