It is not a legit currency because it is not regulated by the government, it is not implemented by them but someone just invented in it and they don't want people to become victimized of this as they were thinking that it was purely a scam.
I think you should need to do more research. I do not know where you live nor where you get the basis of your remark and/or statement. Currently, there are around 75 countries (and territories) where the status or usage of
Bitcoin is Legit or Legal, as it says...
"The legal status of bitcoin varies substantially from country to country and is still undefined or changing in many of them. Whereas the majority of countries do not make the usage of bitcoin itself illegal, its status as money (or a commodity) varies, with differing regulatory implications. While some countries have explicitly allowed its use and trade, others have banned or restricted it. Likewise, various government agencies, departments, and courts have classified bitcoins differently. While this article provides the legal status of bitcoin, regulations, and bans that apply to this
cryptocurrency likely extend to similar systems as well."