Not sure we absolutely have to judge the quality of the current crop by the merits (or lack thereof) of previous youth squads.
If you look at it more long term (in the last 20 years), we've produced some incredible players from our youth setup (yes, I'm not writing academy) who have played top level football for an extended period of time.
As of writing and to emerge from our academy there's one of the most expensive keepers in the world, there's one of the most expensive defenders, there's a right back who is many people's vote for the team of the year, one of the hottest young strikers in the Premier League and a handful of others who will be playing in the top two divisions next season.
The balance of probability suggests that not even half of our under 23 first eleven will make a career in the game, but it's not entirely out of the question. Don't build them up to be shot down, but don't shoot them down before they've even had a chance.
There are some absolute athletes in that setup, and that's half the battle already. It's one of the few bright spots to be excited about as a Blade currently and I'm looking forward to seeing what happens.