Yes, I take your point but these vets are still not actually involved in an opposition's coaching team, with direct input into both the intel of your side, plus possibly on the lookout for any useful opposition intel. I doubt these media/management roles are as risky as Daisy's direct coaching input could be.
It could even be a glimpse of some secretive tactic, or injury stuff - when a team are trying to conceal the true problem so a particular player doesn't cop attention on that spot.
But I'd happily ban them all, to be consistent (unlike the umpiring fraternity!) Don't see why the media can't operate from outside the rooms, in their designated studio areas; AFL personnel can easily get to them.
[ They have become over intrusive - see the funny segment on Front Bar last night with old footage of Del Santo questioning his old mate Goddard post an Essendon game all the way off the ground, down the race and into the rooms. Expected him to be still interviewing in the showers! ]