I would actually argue the introduction of development squads has stopped that.
All of the young players coming into the panel in recent years come from traditionally very small clubs, players who play for clubs that would be among the weakest in the SFC.. Costello, Lowndes, D.Byrne from Olafs, S.Carthy of Mearnog,
Players generally get called up to the senior panel on the basis of their performances with u21 and in some cases minor Dublin panels.
Not many nowadays who get called up purely on their club form, S.Carthy of Vins being the only major one. Mannion helped himself break in with a very good SFC but apart from that Gavin doesn’t seem to be picking on the basis of SFC form. 2 of the four semi-finalists from last year only have one player on the panel, Vins have 2 outfield and Mun the exception.