This imo, is 100% correct. Clubs should not be able to horde young players if they are not going to use them.
But it's also phase 1 of the kind of thing FIFA/UEFA will be looking to do, in the coming years, to try & level the playing field.
We should start making bigger effort to use the academy, to bring through players for OUR first team, before we lose all the advantage of building the new academy in the first place.
Some people in the Sancho thread, are so blase about this kind of thing, just assuming we can pick & choose the best kids & pick & choose the best players for transfers in, forever.
We have already missed about 70% of our recent transfer targets, to inferior teams & it's purely because none of them bar Van Dijk have been worth a shit, that nobody cares.
In the future, with transfer fees going so stupid that average or unproven players will cost Ronaldo prices, the difference between the top teams could easily come down to the success of their youth systems.