Older article regarding pro clubs and academies

Its 3 years old, but still completely relevant:

www.mirror.co.uk/sport/football/news/what-point-premier-league-academies-8812433

Its really regarding the fallacy of a club "developing talent".  We've heard the same on this forum, including about AU not developing players.  It was somewhat interesting to me that at our current club at my daughter's age, 3 players left the first team for other clubs...in the reshuffling, zero players were promoted from the 2nd team to the first, actually 2 players were dropped from the first to the 2nd team when new players were brought in, and a few players dropped from the 2nd to 3rd (or to other clubs).  Several of the girls who left and were demoted had been at the club for 5+ years.  If that doesn't scream "lack of development", nothing does.  I noticed how the players really didn't get better technically (coaches don't seem to focus on it, not the way I've seen in the Tudela FC videos).  What I've noticed is that the only players who get better are doing so through private training.  So is it the coaching methodology to blame?

Regarding development and upward mobility, I'm becoming convinced that similarly to corporate movement at many large companies, the only way to move to a higher level team is to move to another club.

Perhaps the pro academy approach is not the right approach?  Perhaps simply making every player tryout again and hoping for new imports to push them is the best way to go?