Money by definition is the most liquid asset or an asset that is accepted in exchange for all other assets. The key property is absolute liquidity: you know that you can use money to purchase anything you need without the need to convert it into intermediary assets. Bitcoin is not accepted as such, and thus cannot be considered money.
If we assume that Bitcoin somehow managed to become money (which is unrealistic), it will destroy the fiat currency according to the scenario that I described in
my previous post.
It depends on how strict your view about money. If it's so strict, then Bitcoin is "near money" or M3.
It's more "hard money" (not about politics) or "sound money" compared to fiat currency.
Moreover, it can be used not only as SoV but also as MoE, although limited.
Perhaps what you mean is about Bitcoin to be the legal tender or currency, well at the moment, it's unrealistic because, for that to happen, countries need to abandon their fiat currencies.