Please do feel free to share who Mayo’s young players are other than D O’Connor who feature regularly, Coen played a bit and Loftus no more than an accumulative 10/15 mins from July on. Regan is no spring chicken and apart from that don’t really see who else could be seen as a very young player.
Serious county would apply to most Div 1 teams really. As mentioned bar a few exceptions Dub, KY, Mayo and Tyrone all have few very younger players barring a few exemptions. Monaghan have a few but still rare. Even Cork got to u21 final last year and only a 1/2 played regularly come summer time.
If you’re discrediting someone’s opinion because they cant back it up with facts, maybe try provide some of your own to back up yours :)