The past is not relevant in this case, it was a Chizzz-oke!
No team has ever done what the sox did. Or what the yankees did either.
Each team is essentially new after about 5 years. The fact that they won in the late 90's is meaningless here.
Well if it wasn't the Yankees who Boston beat, people wouldn't be reacting the way they are. This is an opportunity to trash the Yanks. I don't expect Yankee fans to sit back and allow the team they love and support to be trashed by people who hate them. I wouldn't expect that from the fans of any team, in any sport.