I think you want a binary world where things are either A or B and not somewhere in between. BTC is being used as a currency in El Salvador and it is government mandated as a currency. Thus it is a currency by that definition. But my argument is that it isn't a good currency based on its properties (which I listed some and also linked to an article on desirable principles of a currency), rather it has the qualities of an asset.
I think I haven't changed what I am arguing, but I think you misunderstood my argument as something much more simplistic than what I was actually saying.