Can one kill a culture which exists only like a fossil ?

According to British historian Arnold Toynbee, Tibet's Lamaism based
culture is already dead. It exists as a fossil.

"The Lamaist Mahayanian Buddhists of Tibet and Mongolia correspond to
the Nestorians and Monophysites in re representing a reaction that was
abortive. The Lamaistic or Tantric form of the Mahayanian is the relic
of vain attempt to turn the Mahayana back from the historic path along
which this originally Indic religion, after travelling through the
Kushan Empire and there becoming imbued with Hellenic influences,
eventually fulfilled its great destiny in the Sinic World. The Tantric
Mahayana was a half-hearted and therefore unsuccessful forerunner of
Hinduism -- the 'totalitarian' Indic religion out of which the
internal proletariat of the Indic Society eventually fa****oned tis
indigenious universal church.(A STUDY OF HISTORY Vol. 1 by Arnold J.
Toynbee)

Lamaist Buddhiam is a cultural failure. It is a fossil. To the extend
that Lamaism dominated the Tibetan culture, the Tibetan culture is
also dead. Can one kill a culture which exists like a fossil ?