Raahh
Meant to respond to your post re Nasty Nick.
I think most of them, vommentators and ex-players can't call him out over the swearing & dissent because to some degree, they are all guilty of it.
In the main, it seems, everyone is in agreement that Nicks behaviour can be seen as disrespectful to other players, officials and the sport in general, and that's what they take issue with.
As Andy R said, as I mentioned up there, it appears to be that should anyone try to speak to or advise Nick, he sacks them.
I stand by my post of yesterday when I talked about Nick & his attitude towards Rafa. 
I don't know why they're all making such a fuss, to be honest. Are you seriously telling me he's the best up & coming 'youngster' to promote tennis ? Bollocks he is.