Well, "derail our season" is a bit subjective. For a Super Bowl-or-bust fan, sure. But for others, this will be a great season barring injury to critical pieces - fun team to watch; solid character guys; likely playoff run.
That said, I do totally agree that we will not have a good feel for the ceiling for this team until we see this offense multiple scores behind and having to play 3-4 WR sets without max protection. And if that doesn't turn out well, we'll also get a good feel for this latest generation of post-2006 fans by whether/how quickly they turn on Carr and/or the O-line..