Because i have the internet and use a variety of different discussion boards?
Q was widely active on several chans i was a part of in the past, its not hard to see the same garbage they post being reposted here by users who claim they have never heard of it.

This is an acceptable answer

Was mostly curious, I think qanon and antifa are both dorks.
How any intelligent person could become associated with either group is scary.

I am fine with punching nazi's but antifa are a bunch of larping nerds.