He's listing where guys should be on the depth chart. Truth be told, I think he's got it correct for the most part.
The one thing that's giving me some hope for the top 9 is the last spot on each line isn't expected to be a driver there, you can get away with adding in a complementary piece without it being an issue (Kassian with McDrai, perhaps trying a kid like Yama or Benson with NRH/Neal). Even though the 3C spot is a question, you'll have two experenced vets with Granlund and Chiasson on the wings, which helps a ton if you plop someone like Haas there.
Guessing right now, I think Kassian and Haas are the safer guesses to move up, and there will be a battle between Yamamoto, Benson, and Nygard (and maybe Gambardella) for the other winger on the 2nd line. Personally, I wouldn't be surpired to see Yamamoto and Neal click a fair bit. A playmaking puckhound, and a sniper that knows how to get open ice; mix in RNH's smarts to support and make plays, and I like it. If Puljujarvi actually shows up to camp, I could actually see him doing well in this spot too. But we'll see how that plays out.
My guess:
Draisaitl-McDavid-Kassian
Neal-RNH-Yamamoto
Granlund-Haas-Chiasson
Khaira-Gagner-Archibald
PB: Cave, Brodziak