-snip-
Bitcoin is included on the exchanges because there is a demand and some governments agree and or tolerate it to be included on these exchanges. About Bitcoin being money, it has been long debated but there is no doubt, after all these years, Bitcoin has established that it has real value.
If you are talking about local exchanges, including Bitcoin in local exchanges is at the discretion of the exchange owner, the government only provides regulations on how it is used and the government applies taxes on trades that occur.
and Bitcoin as a currency maybe some people have different opinions.
If it is said to be a currency it will be used as a legal transaction tool, but some government regulations such as the government in my country do not allow Bitcoin to be used as a payment currency, only as a commodity or for trading.
Bitcoin does have real value, providing benefits from trading activities carried out.
But to become a currency, a means of payment is still quite difficult because it is hindered by regulations that are not in line.