I've said for quite a while now that the prospect pool rankings don't mean much, if anything. They're not a portent of how good a team is going to be in the future. That said, all prospect pools have the majority of the players end up as flops. Most will have only half their top 1-4 guys pan out as anticipated.
Pronman's '19-20 Farm System Ratings
Look at the top prospects from the top teams:
#1 Rangers:
1. Kakko, 2. Kavtsov, 3. Fox, 4. Shesterkin.
#2 Avalanche:
1. Makar, 2. Byram, 3. Newhook, 4. Kaut.
#3 Devils:
1. J. Hughes, 2. Ty Smith, 3. J. Boqvist, 4. M. McLeod.
That's a list where about half the guys lived up to their billing or draft position, and the other half are in the NHL but disappointments, or have flamed out of the NHL entirely. And these were the
top 3 teams. The further down you go, the lower the odds of the player being an impact NHLer. Teams need to get lucky occasionally to have out-performance. Dallas' core, for instance, is built almost entirely on the backs of their 2017 draft and their 2021 draft. They got a single player out of 2015 and 2019. All other relevant years are lists of nobodies or non-core players.
Wheeler has our current list (ranked #2 in the NHL) as follows:
1. Buium, 2. Yurov, 3. Jiricek, 4. Wallstedt. Which half of ours do we think will live up to their billing? Odds are only that many will. No point in getting upset when it happens, or blaming the development system, it's just the reality of the game.