In simple terms until it gets a centralized state it will not be given importance as a legal currency. In my thinking it will get the legal status with some sort of limitations depending upon the government. It is legit, as everything happens through internet scamming is easier and this makes people term it as not a legit one.
Yes Inorder to get official legitimacy Bitcoin may have to undergo some regulations so inoder to happen that It should be a centralized one because no one can make regulations for a decentralized one but the thing is what sort of limitation, disadvantages can occure during such processes