I'm not complaining, but it is arbitrary. There's no real basis for awarding one or two or three assists per goal, just successively smaller correlations with each touch, until it becomes something close to +/-, which is fairly worthless. And so a system that on average award about 1.6 assists for every goal is going to favor players whose skill sets favor puck distribution. I think Crosby is the better player, but him passing Ovechkin isn't all that notable, when his game is better suited to point accumulation under the system in place, and if not for some really bad luck, he'd already be ahead.
It's true, but on average a secondary assist is less likely to be the primary cause of a goal. And there undoubtedly some great efforts on ternary assists, but the correlation between third touches and goals is low enough that we don't bother counting them. I'm not disputing that assists are valuable, and are sometimes more important than the act of putting the puck in the net itself. I'm just saying that the decision made at the inception of the sport to award up to two assists instead of one or three was arbitrary at the time, regardless of whether we agree it works pretty well for determining the best players.