That if Sinoization of Tibet completely obliterates the native sub-Indian culture. Then it values really weren't that strong or enduring in the first place.
Because the millions of Chinese people about to pour into Tibet on the completion of a direct railway link won't obliterate it? Oh wait, they will. And one of the most interesting cultures in the world will be crushed by one which destroyed its own in the Cultural Revolution.

How can you possibly think that? Have you ever been there?