shouldn't players be forfeited for incorrectly claiming draw

c'mon they are able to play blindfold but mistake when claiming three-fold repetition. Chess professionals should be required to be in control of all aspects of the game: time, castles, repetitions... etc. If you don't have the ability to remember if position has been reached three times, you should not be able to claim a draw, or at least know that if you fail you lose the game.

Assuming you are referencing the Carlsen-Nakamura game, when Naka's draw claim was denied because the same position was reached, but not the same player to move. That is a small mistake, and it happens every so often (it just happened that it was in a high-profile game this time). Things like that happen.

If a player makes too many incorrect claims (I think it's three), then they get forfeited. But not for one, and the penalty for one is your opponent getting 2 extra minutes on their clock (which Carlsen did get).

The position DID appear on the board 3 times. However, it was different person to move and according to the official rules, it doesn't count as a 3-fold repetition.

Example:

Reported.

The penalty should fit the crime, and therefore no, the penalty for an incorrect claim of a draw should not be a forfeit. 

As an OTB chess player myself I know that mistakes can easily be made.  I don't think a loss would be appropriate for that. 

I think chess is a game where mistakes yields to loss

If you're dumb enough to accept an unsound draw offer then you deserve to lose that half point!

fifty move rule rocks MSC

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