That is a good point.
However, if the term has been that corrupted it would be a good idea to drop it.
Many of us would be called 'liberals' in the 19th century but we would not call ourselves that now since we know how the term has been corrupted.
I've long since stopped referring to myself as a classic liberal. Nobody knows what that is. And the word liberal immediately raises questions in the minds of small government conservatives (although I'm beginning to believe small government conservatives don't really exist)