Billy took over in 2003 or 2004 - I can't remember which.
Nemo won Cork Seniors 3 times in a row and 4 times in a row in the noughties.
So they had 6 in 2004, 3 in 2005 and 2006, and 1 in 2007.
In that context, I think the implication that Billy was favoring Nemo players, at least for the starting team, for the majority of his tenure is substantially inaccurate. Now, to be fair, I think I read somewhere that he said himself that initially in his 00s tenure he attached too much weight to whether or not a player was playing in the Senior club championship.