Karjakin vs. Caruana R14 Why Not 6...g6 and Make Karjakin play chess

https://www.youtube.com/watch?v=mCRqzl7gY1A

The above is the GM Yasser Seirawan analysis of the  game:

Karjakin vs. Caruana R14

I have reviewed about 14 videos and none of the analysts mentions the move 6...g6.  After the moves 1.e4 c5 2.Nf3 Nc6  3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Bg5 several alternative moves are mentioned for Black with some light analysis. GM Seirawan describes the tie break situation  that  Caruana was facing.  He had to win this game( he had to  asssume  that Anand would not win his game) in order to win the right to face GM Magnus Carlsen for the world championship.  If he  drew this game then Karjakin would beat  him out on  tie break points. 

Why not play 6...g6 and  force GM Sergey Karjakin out of his preparation and make him play  chess against GM Fabiano Caruana.

After 9...0-0 it is very close to a good for Black transposition to Dragon Sicilian.  I believe the  Bpair is  worth the  pawn  temporarily.  The strength  of 6...g6 is that it forces White to play  7.Bxf6.  If he doesn't he still gets a  bad variation of  the  Dragon.

Thank you  for posting the game.  I am still  too new at posting games

6...g6 is seen as dubious but some bad reputation are not deserved.

It is not so simple, and for information, just read this article :

https://www.chess.com/article/view/sos---secrets-of-opening-surprises---february-2013

Seirawan mentioned it a few times, whether h-pawn is better on h6 or h7. Think it is better on h7, covering g6 square, so if black wanted to play b5, think should have played it immediately without h6, bh4. Same sort of position as game, with more options for black.