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.
If we talk about legit it concerns about the coin being lawful or acceptance from the government. With this the government needs realization for them to understand that bitcoin is not just something that is not worth it. I guess the government need to teust bitcoin. But then the government has their own perspective. I suggest that the users must prove the government that bitcoin is very useful.