Well, if you're worried about censorship(and lets be real, 99.9% of what people use mailing lists for won't be affected), don't use Mailchimp.

"We’ve updated our language to further clarify our Rules (Section 17 of STOU), which state that Mailchimp does not allow the distribution of Content that is, in our sole discretion, materially false, inaccurate, or misleading in a way that could deceive or confuse others about important events, topics, or circumstances."