@Michael You're right that there is some risk of censorship in that an HTTPS certificate could be revoked, which assuming you're using HSTS, censors you until you can get a new cert. There is also some risk that certificate authorities could sign certificates fraudulently.
It's a trade-off. HTTPS provides visitors privacy and authenticity when they access a web site or service and, for me, that's a higher priority.
While HTTP doesn't rely on a certification system, it is vulnerable to more subtle censorship and manipulation, in that spying and tampering with the information "in flight" is straightforward.