But it's not about meanings of words with these people. It's about exercising power. Facts and logic don't matter.
It's obvious that the vast, overwhelming majority of people consider themselves anti-fascist. So I really don't think it possible for this term to ever actually describe a particular group of people, excluding other groups of people.
These attempts to shoehorn the word "antifa" into some kind of distinct organization seem like they are just a lingual change to make it more difficult to use this phrase, or more difficult to advance critiques of fascist tendencies wherever they may appear.