I think the issue with looking at it simply in a vaccume is you need context for this. I actually still think our drafting has been pretty solid, its still the graduation they have issues with. The other thing is you need to look probably 2+ years after a draft too give the prospect the chance to make it. So let's go through it.
2014: Probably our best time to graduate someone, and the Filip Forsberg trade looms heavy on this year. They had openings at center (Burakovksy started the year as 2C, Brooks Laich was our 3C, and Kuzya started the season as the 4C) but there only center prospect (2012 draftee Chandler Stephenson) didn't even hit the AHL yet and they were finally graduating Kuzya. No one too could graduate.
2015 - 2017 the roster was basically locked down. They were able to graduate Vrana during this period, but there was no room on the defense for Bowey (who was a bust) and Sanford. No one could graduate.
2018. Honestly, this team was more solidified then I thought they'd be too. They had an opening top 6 spot, but they hadn't drafted a forward prospect since 2014 with Vrana. They just had no one to fill that role, so they swapped Connolly and Burakvosky back and fourth. Stephenson finally graduated. On defense they graduated Bowey, had Djoos at 2LD (and could probably have a need to fill there) but Siegenthaler only had one year in the AHL at this point. I
think he also got hurt this year, but I could be wrong. No one else could graduate.
2019. Heavy veteran forward line, no real holes beyond the 4th line but that was a dominant line at the time. Defensively they could have used a body. Siegenthaler should probably have gotten time, but they had Kempny, Orlov, and Djoos. The right side had Gudas at bottom pair. It's still a good defensive group.
2020. Heavy veteran forward line, still. This was a big loss on defense where Siegenthaler should have graduated and we should have been working in one of AA or Fehervary, but we had Dillon and CHara holding up the left side. Right side had Carlson, Schultz, Jensen, and TVR. We graduated Samsonov and Vanecek at Goalie.
2021. Opening night had 4 rookies. Lapierre, mcMichael, Malenstyn, and Fehervary. We all know how that went.
I think judging the prospects based on a team's issue to graduate is kinda ridiculous. I think we've had plenty of guys who should have a few hundred games played. They just haven't been given the opportunity due to team building and coaching decision on lineups.