We should take this 'insider' story with a grain of salt. Why would Russia signal its intentions before already having a sizable exposure in cryptocurrencies? It just does not add up.

Assuming the 'leak' serves a purpose and is thus purposeful brought to the general public, perhaps the intention is to shake belief in the faith of Western fiat currencies (further), thus increasing the foothold of Russia as major holder of Gold on the international chessboard.