I have to wonder about claims like this.
Lets look at just the last 15 games, this removes the start of the year where you claim he'd be an asset,
In those games at 5v5, he has the 2nd best GF% of all D, behind only Zub, at 55%. Pretty good for a guy on a team that went 4-10-1
He has the 4th most PK mins among D, with the best GA/60 on the PK among regular penalty killers at 4.69/60, again that's pretty good, 26th league wide among the 120 D with 20 mins on the PK over the same period.
That seems like when he's on the ice, from a purely end result perspective we've been on the right side of the ledger,