IMO this is more myth than truth. For example, this year there’s 3 NHL teams that have been a level above the rest - Boston, Washington and St. Louis. Boston’s top 2 players are wingers (Marchand and Pastrnak). Washington is arguable between Ovie, Kuzie and Carlson, but most would say Ovie, a winger. St. Louis is hard to say, a very deep/balanced team, when everyone’s healthy it’s probably between Tarasenko, Pietrangelo, ROR and Binnington. Regardless, it’s getting more and more common for top teams to have a winger as their best player. Kucherov, Kane, Gaudreau/Tkachuk, Panarin, Svechnikov, Stone/Patches, etc. So far this season, the top scorer is a winger for 17 of 31 teams.
Re: “is Laf head and shoulders above all the centres in this draft,” you’ll get mixed opinions on that, but IMO yes.