Simple explanation on wiki here and here 

The thread is moderated because we have really, really big trolls who flood it, and we even had to use a bot to destroy their message automatically ... There is no censorship, as troll are not posting critics, but useless fud and this 4-5 times per day. Critics and debating is welcomed, if it's something serious.

Without moderation we wouldn't have the courage to post here. The work of the team isn't to answer to stupid trolls, but to develop the project and help community