There has been bad stretches and they have underwhelmed. But I think it’s more situational spots.
Who is responsible for that?
Top 15 in points allowed.
(At #15, for the record...and by that same measure they have only played 3 teams that are top-15 offenses.)
Points allowed and passing yards allowed is pretty much the only way to take a positive view at this defense as it stands.
25th in takeaways. 28th in rush yards allowed. 19th in preventing scoring drive. 19th in expected points contribution...etc.
As far as I know on the basis of total investment (money+draft capital) this should be seen as the "most talented" defense in the league. When it comes to actual results, it's barely a top-half defense on its best day. If that doesn't reflect back on the person in charge of that unit, then it should reflect back on the one who assembled it. Your pick, I guess, but someone has to be held accountable.