It's funny watching this argument.
I'm from a very hippy community.
I'm a collectivist.
I'm extremely far left & progressive.
I'm wholly anti-fascist.
I'm also 100% in agreement with you regarding including differing opinions regardless of how extreme.
Inclusivity only brodens the divide and limits opportunities for people who harbor extremist views to be influenced toward developing more balanced, functional, and beneficial perspectives.
Moderation can be used to soften their influences in our commuty while including them allows our community to influence them.