I'm not worried about this. Like it was said earlier, "everyone" is under performing at the moment. And unless everyone has a sub career season, it is reasonable to assume the Sox will have a streak were they out perform career averages. That's why I always say wait the first couple months and then see were they are at. It's why I never get too wound up or overly confident when the Yankees play like s*** for the first month or so(which has happened a few times over recent years, not always), only to be right back in the race by mid June and the bad start being a complete after thought. So everyone just needs to chill and let things settle and gel.
If things haven't changed by mid June then yes obviously they should be considering changes.