Its still a slave cause we need to sell bitcoins for some fiat if we want to pay for something. Fiat have big roots, it will be hard to eradicate it from global structures and even harder from some peoples minds. As years passing I think we are going in a good direction, fiat will not be used in near of far future, we will be able to do everything with cryptocurrencies, and when that time comes it will be the end of fiat. If you are looking things in that way fiat already began to sink down, cryptocurrencies are spreading and taking more and more, eventually cryptocurrencies will take all.
This is a nice headline, bitcoin is still a slave, but who ever starts from slavery, bottom, and end up on top deserves respect, think about it.
True until the day comes where we can use our bitcoin independently from the fiat system we are tied to it, obviously there are always going to be people that would want to sell their bitcoin for fiat, but what many of want is to be able to buy whatever we want with bitcoin, this is not possible yet but I'm sure that is a lot closer than people think especially if the economies of the world keep getting weaker with each passing year, people will realize this and adopt bitcoin very quickly.