well for a comparison, pogba indeed developed after some early months at juve but now after certain amount of games he has been somewhat stale, let's be hones here, he didn't automatically and linearly turn into a zidane yet right, and that is proof enough that young players don't necessarily need 38 league games a season to consistently developing.
besides, most people forgetting that competitive matches are just that max 3 times a week, right? footballers or any athletes certainly don't get developed from just competitive matches alone, in fact one can argue that athletes developed more because of trainings than competitive matches; and then training at the highest class of environment (juve) should and would benefit much more than training at the mediocre environment (lower midtable teams)...
I'd think that 15-20 serie a & coppa matches plus the chance to play at CL games with juve at such high competitive level of mentality would be a much beneficial learning environment to gifted young players than playing 38 serie a games with mediocre clubs surrounded by mediocre players operating at mediocre or even loser mentality state.
besides, it's only 1-2 players ffs, it's not as if we are going to field 7 youngsters in a CL match

why is it so hard for italian football to digest this?
What you again fail to understand, is the importants of reliable quality on the bench. Its totally fine to have some youngsters on the bench, as long as they have developped far enough so they could be subbed on without making to much compromises.
The key thing beeing, they must be able to play alot, and challenge.
Pogba, could do this at 20. He came on, sure asamoah had to cover him a bit, but he added immediatly to the team, the gap in quality wasent that great, the tactical flow was less, but for such a talent, thats not a big deal.
But here is the thing. Juve cannot afford to trow games, by lining up youngsters that arent good enough to compete yet. And the youngsters cannot afford to miss playing games, waiting for when we meet a minor team.
Therefore, a player must have reached a certain level of quality and consistancy, he must be able to challenge.
Currently, Berardi is buzy challenging at Sassulo. His long string of lesser games doesnt even make him a starter anymore ! What the hell is he supposed to do at juventus when Tevez who is never injured or tired, is in front of you. Should be bench the vastly superior tevez ? SHould we risk to have Tevez form drop cause we need to grow up some kiddo ? Hell no, we are juventus.
The argument about training facilities is a weak one. The greatest players ever, learned to play on the street. Sure, training facilities help to polish players and aid development when they are in the academy, but playtime is much much more important.
Thats why players need to loaned out untill they have developped and showed some consistancy. The players much reach that point, that if they were owned by a minor club, that they would want to take the transfer to the big teams. That very point.
Immobile is a great example. Past years he'd hardly make our bench. Now with a small club, he makes his breaktrough, and is consistant all season. He is ready.
So they're bonding nowadays?
Not really. At least not the way you celebrate your raging homosexuality with your friends here.