The PATRIOT Act is a terrible law. Opposing it doesn't make you a terrorist. But you would've been accused of being one nonetheless if you opposed it in 2001.
It's easy to see why many people wouldn't want to actively get into such a controversy. But even that is being used as grounds for kicking someone out.
Also, I brought up the PATRIOT Act because it's so strikingly similar. Any rule that is broad and vague can and will get abused. Any prior assurances otherwise have zero effect. Yet, looking at discussions in RFC 98, there was strong opposition to making the rules clear and well-defined in scope. It's no wonder the community was unable to reach an agreement. Also no wonder that the whole thing is blowing up even further because the moderation is effectively operating in this way regardless.