That's an... interesting hobby.
That sounds like you're playing the exact caricature of what they think 'the left' is so it's valuable to have you around as a sort of prototypical 'see, you don't want to be like him'. In other words, you help them keep people away from 'the left' so there's no reason to ban you.
So in my experience they very much did NOT become safe spaces, even when faced with every idea I could think of which could be considered solidly "left."