"So antifaascists are fascists? Nice logic"
If you see someone who calls themselves Antimurders murdering someone, well that would mean that title doesn't mean sh!t, doesn't it.
If you see someone who calls themselves Antidrugs doing drugs, well that would mean that title doesn't mean sh!t, doesn't it
If you see someone who calls themselves Antifacists doing clearly facist things, well that would mean that title doesn't mean sh!t, doesn't it
You can give yourself whatever title you want, but that doesn't automatically make you that thing.
You can call a turd a rose, but it wont make smell better