To be honest, I don't even know what your point is. You're comparing SDA to top 5 picks. That makes no sense. You can't compare 3rd/4th OA picks to 76th OA picks, expectations are completely different. Strome was a bad pick because he was a 3rd OA pick, and expectations at that point are that you have a very very good chance at a good player.
3rd OA picks from the last 10 years:
Kotkaniemi
Heiskanen
Dubois
Strome
Draisaitl
Drouin
Galchenyuk
Huberdeau
Gudbranson
Duchene
76th OA picks from the last 10 years:
SDA
Alexei Lipanov
Rem Pitlick
Adin Hill
Elvis Merzilkins
Taylor Cammarata
Chris Driedger
Logan Shaw
Jakub Culek
Igor Bobkov
So if SDA doesn't make the NHL, he'll be in the exact same boat as 8/9 of the previous 76th OA picks. If you could pick sure-fire NHLers with a 76th OA pick, you'd be by far the best scout in the NHL.
As long as SDA is generally trending well, and not noticeably below the majority of other players picked in his range, he's not a reach. He doesn't need to be the absolute best player available out of the remaining 100+ picks in the draft to be a decent pick.