It shows that mostly for players coming through La Masia (Pedri an obvious exception) not necessary for foreigners who need not only to adapt to the club on the pitch but off it as well. Adaptation is not easy for 18-19 yo kids, especially if they don't even speak Spanish.
It isn't about adaptation really, the club actually believed in Demir as a young player and the whole B-team thing was just to get around Liga rules.
The coach believed in him, the board believed in him, he himself believed he is 1st team player and that is what he was signed for. Unlike guys like Araujo or Halilovic who knew from the start their time will be in B team.
Even if Demir was registered with B team, he would have stayed and played same exact minutes with 1st team, and same non-existent minutes with B team.
His registration is just a bureaucratic thing, at the end they just decided to go with him as 1st team player because that is really what he is.
Even as bad as he is playing atm, and he is really bad, we have no one else to take those minutes.
Registering in B team would have changed nothing.
Collado would've been given a 1st team slot and Demir would've gotten minutes in B team
We had 2 free spots for Collado and didn't register him, doubt the 3rd slot would have made any difference.
The club didn't really rate him, and that is why he isn't registered, not Demir.