The point about usage is a good one.
Connor Punnett was on their team last season and was a LHD who had offensive ability (7 goals, 17 assists in 32 games).
Was Danford playing alot of time on a pairing with him in a LHD/RHD setup whereas now Luca Marrelli has really taken a huge step but he's a RHD, so you really wouldn't want Danford playing his offside with him? Meaning less offensive spots compared to last season? Is he seeing less icetime with his teams top offensive players (Senneckke, Barlow, Ritchie etc)?.
Who's his defensive partner this season? Are they less capable of moving the puck especially as the main facilitator on the pairing? Are they even being forced into a RHD/RHD pairing which isn't optimal? Is he getting less offensive zone starts compared to last year?
There's just so much actual context needed to know exactly why a certain defencemen might not be putting up more assists.