"It's up to the players" is something you EARN as a GM when you build a juggernaut roster like Joe Sakic did with the Avs last year, the Tampa leadership did with the previous two Tampa teams before that.
You get that when you've done just about everything right and the roster is rock solid in its construction from just about every angle.
This team maybe still needs McDavid and Draisaitl to be at near superhuman levels to cover up several flaws and sure it's possible they can do that, but I don't think they are at that level where a GM can say "you know my job here is done". Well for one, you're running a rookie goalie because your 5 million UFA no.1 goalie that supposedly was scouted heavily is unplayable. Sorry but that's not a "my job is done here as GM" situation. Yamamoto still in our top 6 when he has no business being in the top 6 of any top team. Still a lot of rawness and inexperience on the blue line, probably more than a Cup contender should really have. Cody Ceci probably really should not be playing in the top 4 of a Cup contender either frankly.
Holland got it right with the Ekholm trade, 100% can give him credit for that, but no this isn't a job done to the point where he deserves to kick his feet up on a desk like Sakic could last year.