When things haven't gone well, Sox fans have often been miserable, disappointed, and/or heartbroken. But I don't think that's the same thing as the sense of entitlement that I see from some fans. Anyway, that's just my opinion.
If the Sox don't play well this year, I am not going to be happy. I take the losses as hard as anyone. Too often, I can't sleep after a tough loss. That said, if things start going south, I'm not going to constantly bash the team or the FO.