That's not right. Woke is an adjective form of SJW (Social Justice Warrior) and almost exclusively used by people who disparage people interested in social justice in a sneering way. It is meant to be insulting but it does have meaning.
It’s not that these words have no meaning. The problem is that the meaning is vague and changes depending on the speaker and context, so that to the reader/listener it is generally impossible to tell quite what meaning is intended. The word says more about the identity politics of the user than it does about the target.
