What happened to the concept of sample size again?
Nothing happened. In what context are you attempting to apply sample size concerns? About what? We have a massive multi-year sample that shows you to be wrong about our defense in past years.
Five years vs 45 games of Treliving
What does the length of their respective tenures have to do with anything? It would be more accurate to say that our previous GM was already adding a top pairing defenseman 40 games in. Shed defensive cap anchors, consistently and effectively replaced departing pieces, and added new pieces on defense and forward to turn us from a bad defensive team to a top defensive team within 2 years. He never oversaw a defensive drop off like this, despite more difficult circumstances.
45 games into Treliving's tenure, and he hasn't done anything except make our defensive play significantly worse. He failed to replace our big defenseman loss from last year, and while it admittedly isn't always easy to bring in an equal quality player in this time frame, it's not hard to mitigate those impacts like our previous GM did. Instead, he didn't replace that defensive hole at all with even something lesser, he got rid of players that were brought in to support defensively last year after we lost Muzzin, got rid of players that were already supporting defensively prior to losing Muzzin, and replaced them all with rookies and a collection of the worst defensive players in the league. While doing nothing about potential age-related decline that you claim was obvious.
This wasn't some big surprise. This was widely predicted and expected based on his moves. This was an active choice to sacrifice our defensive results in the pursuit of extra offense that we haven't gotten and didn't need, and our defensive drop off should be concerning for every Leaf fan.
Seems like 5/6 bodies the Leafs play on D are hold overs from the golden age. And yet somehow it’s the new GM who has spoiled the winning recipe after letting Holl and Schenn go.
Again, we didn't just let Holl and Schenn go. We lost Muzzin to injury in-season, and then we lost Holl, Schenn, Sandin, Gustafsson, Benn, O'Rielly, Kerfoot, Engvall, Acciari, Lafferty, and ZAR. And again, defensive play is not just about the defensemen, and you're ignoring both Treliving's choice to go with this setup, and the impacts of increasing the role and responsibilities of remaining players by leaving a big hole in the defense and taking away all surrounding support.