People have been touting that notion for years. I'd take it a lot more seriously if the washouts here went on to play well elsewhere, but they haven't, so I really can't bite on the issue. I mean, not even one of them has panned out elsewhere, to my recollection.
I just think it's been a personnel issue. Or, to put it another way, this team hasn't really had a decent backfield since
Hobbs
Samuel
Meriweather
Harrison
It's sad to think that this team really hasn't put a passable starting 4 in the defensive backfield since 2007, but I look at the success/failure of the personnel involved and that's the only conclusion I can really come to. People underestimated Hobbs, especially as a CB2. They also overestimated Samuel when he was here and then acted as if he was garbage the moment he was traded. That wasn't the golden age of this dynasty's DB play, but it was the silver age, and it was pretty good.