Chicken or the egg . Are offenses better or defenses worse?
Yards per play is an interesting metric to hang your hat on. We have bad lbs maybe that has something to do with it as our secondary is much better
Yards and more specifically yards per play is the best indicator for how successful a teams offense or defense is performing.
Mostly for this very conversation. A teams offense can turn the ball over so much that they can have 20-30 points scored against them pretty easily - both the Dolphins and Cardinals did it to us this year - among others. Eagles, Cardinals, Dolphins, Bears, Niners - all featured either a defensive/ST TD allowed or a turnover that resulted in a 10 yard TD drive. That's 7 TDs, or 49 points. Throw in the 6 points the Jets got from FG range, the Giants got one and the Bucs as well. So that's 61 points allowed that are a direct result of turnovers by either the offense or special teams.
Now, what you've said is that other teams can have this too - fair point. I really doubt any other teams offense/special teams have combined to allow 61 points, but I can't for sure say that. This is also me not blaming the defense at all for a 10 yard TD drive which some might disagree with.
What I can say is that this is why yards per play is a better measuring stick. And again, incredibly impressive for the Rams to be better than any team the past few years when offenses have been even better this year.
By the same token if a team allows a team to get into FG range every drive but the kicker misses a FG, did the defense play well? Probably not when the coaches break down the film and see missed tackles and blown assignments - but the defense technically wouldn't have allowed any points, even though the kicker left 21 points on the field in missed kicks.
I'm sure it does have something to do with an elite secondary, but keep in mind that we've seen Rams defenses surrender 5 yards per rush for an entire season - this one is giving up 4.6 yards per play. That's a testament to everyone on defense.