It's a myth that Swansea and Soton brought through their youth to get up the divisions.
Soton spent £1m on Lambert in Lg1 along with £600k on Fonte whom they bought from Palace, they sold most of their young talent after a half a good season or handful of games. Walcott, Ox, Bale, Shaw and Chambers. Others they've bought in Rodriguez, Schneideien and Clyne.
Swansea bought all of their squad bar Taylor and Ben Davies, Dyer was at Soton ironically enough.
Wolves have done great to bring through Iorfa, Price and Batth and bought well to bring on Hause, Dicko and Evans. You have to do both and Wolves recruitment team (Thelwell, Moxey, Webber and KJ included) have failed this season to bring in the sufficient quality to improve the first team to a better standard than last season. That's with buying/ recruiting 6 players which should be plenty for any club. It's a collective responsibility and not getting it right falls on all of them.
I imagine they are as frustrated at that more than any fan as for at least two of them it will be their jobs they pay with. Fans do not understand that sometimes.