Whether the central bank holds BTC or not is quite irrelevant.

They are obviously not pushing for adoption in the general sense, and if they are holding decentralised cryptos, it's not because they want their citizens to be holding them also - it's to self preserve and hedge against the imminent collapse of the bolivar which is already occurring and to pursue national interests.

I doubt that there will be significant structural reforms of real push for currency reforms with Maduro still in office. And don't talk to be about Petro, it's a scam.