Personally, I think that hiding a CV is just silly... But...
HiTech has put a system in place to decide who can control any given CV. What I see in this thread is a lot of people who are not willing to do what is necessary to make certain that they can take control of the CV from someone who wishes to hide it.
Most of the folks in this thread who are complaining about hiding the CV are more then capable of maintaining a low enough score. They just aren't willing to do so. So they choose to come here to complain/whine about how other people are playing the game.
I understand this unwillingness. I am not willing to do it either, but because I don't wish to play the way required to maintain a low score, I don't think I should whine about it when someone who is willing to do so does something I don't like with a CV.
Just my $0.02, for what it is worth.
On a mostly unrelated side note... If all the folks with ability played for score, score wouldn't be so meaningless. Score, as it functions now, is so easily manipulated only because there are so many players who do not attempt to manipulate it. If everyone did, score would be more meaningful.