I agree, in that article they point out that the Chargers defense was excellent in getting teams to 3rd and long. I’ve read other articles that proved he can shut down a teams run game w/ best of them.
A 66% conversion rate on 3rd downs in passing league is damning. So it’s either his secondary coach was trash or he couldn’t mesh the concepts well enough. Since he was HC and in charge of building that D how he wanted it, I’m leaning towards the issue being him.
I’d love to be wrong but it’s proof why most DCs are former secondary coaches in some capacity and we know Staley is a LB coach by trade