That is like saying the junior teams are a failure if every two years they don't produce 3 starters. Personally I see this as a way to polish the U17/U19 players against physically mature opponents before they get the charity 10 minutes from Lucescu. It also gives the club the opportunity to say to the entourages of any players with a big head "fine, the kid can tear apart other kids his age now show us he can do it in the B team before you start breaking my balls to be in the first team starting XI".
Also we can also probably assume like most things Greek the first season would have been a sh1te show of disorganisation and getting the right people in place so really it's only had about one full season.
Was the previous situation better is also worth asking and should we revert to that?