The exception being that what you listed was in regards to current players on the team, typically post game, as opposed to comments about a player no longer on your roster. I tend to agree with the sentiment that less is more when discussing players who have chosen to leave a program...
This was my thought exactly. No problem with Painter letting the kid know you aren't getting any guarantees. I just don't think it does you any good to air that to the media. Take the high road.