Rules govern what is allowed and what is not...if members agree to those rules and have a form of governance power over these rules through voting, then moderation should only be to enforce those rules that the majority of the community already agrees on, posts removed in line with that technically wouldn't be censorship, posts removed for other purposes would be.
Two things to comment.
- Governments strive to censor all sort of speeches all the time, and they are elected by the majority most of the time. So no. Not only it
is technically censorship, but it is almost a common phenomenon that happens to minorities.
- There has never been a truly decentralized protocol where each user can have equal voting power.