Jayjay, there's a difference between constructive critisism and talking about someone like they are scum of the earth. (first bit goes in here, 2nd goes in GM....simple)
There is and I don't think saying a player shouldn't play Davis Cup anymore (as Svet said) or that you have grown tired of the player they have become (as Svet said) is akin to labelling them as the scum of the earth.
Maybe you do, in which case we'll have to agree to disagree. You've taken a huge jump there from what was actually said to how you wish to portray it.
Personally, after Malaga I thought and said - and still think and still say - that Gaudio should never have played Davis Cup ever again, too. Not because he lost - thrashed twice in three days - but because of the attitude he exhibited while doing so. That doesn't mean I think Gaudio is the scum of the earth, far from it. Just simply that Davis Cup, at that level, was clearly something far too big for him to handle (ie. the pressure and expectation from a nation).
And further to that, just to broaden the discussion slightly, if I was Spanish or a fan of the Spanish Davis Cup team, my view of Verdasco would be he shouldn't play Davis Cup again either, because his attitude (I'm not talking about his performance, players play well, players play badly, that's just the way it is) on Saturday was quite disgusting. I'm sure you won't agree - as a Verdasco fan - but I'm just making the point to say it's possible to say that without thinking that person is the scum of the earth.
Unfortunately, too many people take any criticism or bad word said about a player they like to the extreme and make out like they are being blamed for all the evil in the world, which isn't usually the case.
On a side note, I find it amusing that you say "talking about someone like the scum of the earth is for GM". Is there a thread on GM that states as part of its rules/guidelines that you are free to talk of players as the scum of the earth there?