Pretty easy, if they run 3 scoring lines with McDavid, Draisaitl, and RNH centering each then those depth players would get more ice time with some talent around them and could show how they could contribute. But since the Oilers stars are so focused on winning scoring titles alive all else, there just isn't much opportunity for anyone else. Harder for a going player to develop some confidence when the #1 unit is hogging all the PP time.
Repeating the same lie over and over again doesn't somehow make it true...
Funny how you constantly smear McDavid and Draisaitl, yet never apply the exact same logic to anyone else.
Apparently if you carry a team because you are great players, you only care about winning scoring titles, provided you happen to play for the Oilers that is. If you play for another team, it shows shows your greatness and compete level. Draisaitl has been a two-way monster this season, clearly a sign of only caring to score. He's also second in scoring while spending half of his icetime with the likes of Arvidsson, Podkolzin, Kapanen or Brown, of which only one is a top-six player, and said player happens to play a weak season. And nothing shows putting scoring titles above winning like elevating your games in the playoffs to the point that other teams have to injure you to stop you.
Nathan MacKinnon play more minutes than McDavid or Draisaitl, so does Kaprizov. Rantanen played more when in Colorado, and Kucherov and Marner play about as much as Draisaitl. The two are also only 19th and 33rd in PP-icetime per game, but why bother sticking to facts if one can just troll for the sake of trolling, right?
And that doesn't even cover the issue of empty-net points, which certain other elite players are racking up like crazy, while McDavid and Draisaitl don't.
There are things to criticise about the Oilers management and also the way Knoblauch handles icetime. They should have made sure to get Holloway signed before trying to find further top-six wingers (which was very much a need), cap-management also because an issue, which is why MacLeod was traded in the first place. Nugent-Hopkins and Hyman got stuck to the big two even when were invisible, while some other players never got a chance. The worst bit was the treatment of Skinner though, who constantly got relegated to the fourth line or press box for no reason, even after scoring or being one of the most noticeable players (in a good way) while every random 4th liner got put next to Draisaitl or McDavid for prolonged stretches.
Mentioning MacLeod and Foegele is revisionist history. Just because they play well this season doesn't mean they would have done the same for the Oilers. One cannot criticise player-usage and then act as if this wouldn't have applied to them. Both players had severe issues with consistency. MacLeod was supposed to be the third line center, and he completely failed at that, only showing up for stretches when but on the wing. A team trying to win trying to improve on players like MacLeod or Foegele isn't an issue at all. That they didn't succeed in improving, is a different matter, and it stems in part to the weird player-usage applied by Knoblauch.