Depending on the post, but yes, they are.
I have removed several speculative and assumption type posts from the XPT derailment thread so far (though none from you, I don't think, YM) and make no apologies for doing so. I am not
going to have some unqualified foamer second-guessing a fellow Driver who is not here to defend himself.
As for the rest of RP, personally, I haven't seen much censorship beyond spam and abusive or irrelevant threads - and those posts typiucally get grouped and sent off to a thread of their own anyway.