I think that “be ungovernable” and “weirding the web” are good calls: the grassroots movement will pick its own favorites… they emerge. And what is chosen depends on many factors. You may try very hard to make your term ‘win’ and see in a day that another name goes ‘viral’. I personally consider fedi the installed base of social web technologies, forming the open social stack on which fedizens navigate the social fabric through their social graph. If that’s a near match with how others talk, I am content, I will be consistent in my meaning of these words, at least (I am practicing them now).